
I added some quick links to make browsing here easier:
Pins
Stamps
Food Items
Dishware
Toys and Games
Other Gachapon Items
Other Items
Diamond Promotional Pin
Source: Ideal Collectables
This pin is covered with an awesome enamel design! It seems to be a promotional item for the Japanese release of Pokemon Diamond; maybe a pre-order bonus? In any case, it's a great addition to my Diamond collection.

Miniature (Promotional?) Diamond Badge
Source: Yahoo! Japan
I've actually had this one for some time, but kept forgetting to upload it as it was with a bunch of older items ^_^; This came as part of a pair with a Pearl Palkia badge. I think these may be one of my oldest Dialga items, because it looks like they may have been promotional items for Diamond and Pearl.
Can Badge (Cookie Set), 2008 and 2009 versions
Source: Pokemon Center Tokyo
Oh, these badges. Each is one of 6 badges that was only available in bags of cookies sold at the Pokemon Center. I ended
up buying 10 bags of almond cookies, and finally getting the 2008 badge on the 8th. But it's so beautiful!
The newer one on the bottom was not quite so finicky, and I only had to buy 2 bags of chocolate chip cookies to get him~
Can Badges: clockwise from upper left:
Series 1 and 2
Source: Sunyshore!
I wasn't actually aware these nifty pins existed until Gin (the owner of Sunyshore) found them and sold them to me. How aweseome!
One of them had a card, which is this one.
Series 7
Source: Pokemon Center Tokyo
On my second trip, this badge was the finicky one - I bought over a dozen of the randomly packaged badges and didn't get it. Since they'd just recently come out, I could only find them at the Pokemon Center, and I was starting to worry I wouldn't get one before I left. But thankfully, I got him on my last trip there!
Series 3
Source: From the pack~, purchased in Japan
From the set just before the Shaymin/Giratina set, we have a shiny new Dialga can badge! Yay!
12th Movie Edition Can Badge
Source: Pokemon Center Tokyo
In addition to the two other can badge sets this summer (see the above), they also released a set of large movie can badges featuring Pokemon from the movie performing attacks. I was pleased to nab the Dialga!
Mystery Dialga Mini Badge
Source: pheonixxfoxx of pkmncollectors
I flipped out when I saw this badge in a sales post on pkmncollectors, because I'd never seen it before and certainly didn't have it! Since she received it in a random lot of items, pheonixxfoxx didn't know where it was from either.
I thought at first it was a can badge I'd somehow missed, but on comparing it with my other can badges, it's a bit different - the surface is rounded instead of flat, and the text at the bottom is different. It's most like the cookie bag can badges, so I think perhaps it's from some candy or cookie set in 2007 that I've never seen. Whatever it is though, it's quite pretty and I'm happy to have it!
European Dialga 'Steel' Badge
Source: rentorar of pkmncollectors
A badge with an interesting design, dated 2007. This was one of many items rentorar found in stores for me in the UK. Thanks for helping my collection out so much!

Limited Edition Enameled Diamond (Version) Pin
Source: Pokemon Center USA
This pin (along with its counterpart featuring the D/P starters) were part of the package for the Pokemon Center Limited Edition Dialga/Palkia DS.

Pokemon Pins Collection
Source: eBay
Strangely, this was one of the first few Dialga items I picked up, maybe because it was easy to get on eBay. I don't really know much about it.

Custom Mini-Badge
Source: Sunyshore!
Not an official item (at least, we don't think so) but very
cute! It has the Pokedoll art on it~

Foam Craft Stamps
Source: Yahoo! Japan
From two nifty stamp sets featuring other legendary and movie Pokemon. Neat!

Custom Clear Stamps Set
Source: phoenixxfoxx of pkmncollectors
I'm not sure how this set is used, but the huge Dialga backing and all the diamonds make it a very Dialga-centric...whatever it is!
Pokemon Retsuden Stamp Series: From front to back, left to right. As far as I know, this is now a complete collection!
Series 1
Source: Yahoo! Japan
This was probably the first Dialga stamp to join my collection. Good thing too, since it seems pretty rare!
Series 2
Source: Yahoo! Japan
I was searching for stamps one day and found a sealed box of Retsuden series 2, which is fairly old as far as DP toys go. I then saw Dialga on the box and wow, it was one I didn't have and didn't know about. I bought the box and lucked out, getting Dialga and a number of other nice stamps!
Series 3
Source: kylie_fanatic of pkmncollectors
This was the last of these in my search. DP3 is an extremely rare set, and I'd checked the stamp auctions often without seeing many from it, but eventually a box appeared, was won by kylie_fanatic, the Dialga was sold to me, and my set was completed!
Unfortunately, he broke during shipping, so I'd still like to get another...but for now, the collection is complete!
Series 4
Source: Yahoo! Japan
After buying 30 or so of these randomly packaged stamps in Japan, and still not getting Dialga, I turned to Yahoo Japan. This stamp wasn't listed there (at least not under Dialga), so I bought a full sealed box of the set to try my luck. And lo, there he was!
Series 5
Source: kiraras_lemon of pkmncollectors
Kiraras_lemon put one of these up for sale, and I excitedly bought it. Then I bought of the set just for fun and ended up with a second one~
Series 6
Source: Sunyshore!
I bought this stamp along with the series 7 one, and picked them both up in person ^_^
Series 7
Source: Sunyshore!
Gin of Sunyshore bought a few stamps from this series (to get the Staraptor, I think) and ended up with the Dialga. I was very relieved to be able to buy it directly from her and not have to go through the same trouble as with the Series 4 stamp!
Series 8
Source: Sunyshore!
This set has a lot of popular Pokemon like Suicune and Leafeon, so Gin bought a large amount of them and took claims on them. I was happy to get Dialga and all the other ones I wanted from the set!
Stationery Stamp #1 ("ヨロシク")
Source: Daiei (Shiki, Japan)
This stamp was hidden away in a large stationary set. I'm told that saying "ヨロシク" while presenting one's rear has a rather insulting meaning in Japanese...
Stationery Stamp #2 (Point!)
Source: Yahoo! Japan
This set seems to be fairly rare, as I search for stamps
pretty frequently and just recently ran into it. It's part of a Movie 11 set
with Shaymin (Sky), Giratina, Piplup, Pikachu, and I'm not sure who
else.
Pink Stamp
Source: Rakuten (auction service)
Not quite sure what to say about this one, other than it's fairly large and there's also a blue one in the series. (I tried to buy both at once, but they sent Piplup instead!)

Clear Pokemon Center Stamp
Source: Pokemon Center (Yokohama, Japan)
Part of a 10th movie set of large, heavy stamps with an image behind thick clear plastic. I really like this set~
Mini-Stamps
Source: Pokemon Center (Hamamatsuchou, Japan), Sunyshore,
Yahoo! Japan
All of these were from very similar stationery sets that featured lots of these stamps, then some with words/phrases, and then inkpads. Are there any more?

Blue (Foam?) Rubber Stamp
Source: Pokemon Center (Hamamatsuchou, Japan)
This stamp is big! Well, for a stamp - it's about 3 inches square. This is part of a series that supposedly has one for every Pokemon, but I only saw a few different ones when I was there.
Plastic Pokemon Center Stamps (すごい, no text, and "みました") Source: Yahoo! Japan, Pokemon Center (Hamamatsuchou, Japan)
The two on the right were on my wanted list for quite a while. The "すごい" stamp was a surprise find on Yahoo! Japan, although sadly it's a little cracked and has some marker on the side.
すごい means 'Great!", and "みました" in this context probably means "I acknowledge that you did well".

Wooden Stamp
Source: Pokemon Center (Hamamatsuchou, Japan)
A high quality Pokemon Center stamp. I bought an extra to stamp outgoing packages with ^_^
European Stationery Set - Wooden Stamp
Source: rentorar of pkmncollectors
And here we have a nicely carved block of wood...just kidding. Strangely, this stamp has no image or anything on the front, but the back features a rubber stamp of Dialga.
Parapara Zukan Ball
Source: Yahoo! Japan
The Parapara here refers to flipping through pages of a book, in this case a Pokedex. If you push the button on the top, it swaps in a different Pokemon, with maybe 10 or 15 on each one. This is the 'Dialga version' as noted on the tag - there is also a Darkrai and Palkia version.
Puzzle Piece
Source: ritzyfoxx of pkmncollectors
I was a little on the fence about getting this one, because I don't usually go for items where my Pokemon is cut out of a larger picture...but this was a puzzle piece so it was already a single item by itself, and featured no one but Dialga. I figured I may as well, so I picked it up!

Mega Blok (Individual)
Source: Yahoo! Japan
I love this block probably more than is reasonable. I had hoped for a long time that Dialga might get an individual block (like other Pokemon who got both a block and a full set) and then I found out he had one made back in 2006! And the lucky part was, that set was on auction at the moment! Palkia collectors, his block is part of that set as well~

German Wasserball (Beach Ball)
Source: Eileen (a visitor to this site)
This inflatable beach ball came with a German Pokemon magazine that Eileen sent to me along with the Master Ball figure (on the figures page). Thank you!
German Block Toy
Source: Eileen (a visitor to this site)
This block is quite flexible and can be turned a few different ways (such as inside out) to display a number of different Pokemon. I'd left it in the package for a long time before I was going through things and realized that one side featured Dialga, and Eileen had sent it along for my collection!
Foam Pokemon Ball
Source: Yahoo! Japan
This is a foam ball about 4" in diameter that features Dialga. I'm going to leave him in the packaging since he's much easier to display that way!

Pokemon Mini-Puzzle
Source: Yamashiroya (Ueno, Japan)
Part of a set with many (movie) Pokemon, in small 96 puzzle
sets.
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Double Sided Game Chip
Source: Floaroma Pokemart
This is a tiny little chip from some game, maybe about 1" in diameter.

Bubble Blower
Source: Pokemon Center (Hamamatsuchou, Japan)
The Dialga part of a bubble blower set. This piece attaches to the wall and has another piece that blows bubbles from it.

Metal Spinning Top
Source: heerosferret of pkmncollectors
One of the few actually metal Dialga! I haven't opened it up since it looks like the rope could be a bit messy, but it looks neat.

Jakks Pacific Marble
Source: Sunyshore
This marble comes with the individually-packaged Jakks figures, but you don't get it if you buy the figures in a multi-pack (as I did). Thankfully I was able to get it on Sunyshore without buying the figure again!
Diamond and Pearl and 11th Movie Game Dice
Source: Pokemon Center (Yokohama, Japan) and Yahoo! Japan
This is an 11th Movie game die, (featuring Pokemon such as Shaymin and Regigigas on the other sides), and a more general Diamond and Pearl one featuring Chimchar, Dusknoir, and so on.

Yo-yo
Source: Pokemon Center (Hamamatsuchou, Japan)
Includes some kind of mini-game. Let's battle with Yo-yos?
Disc Battle Starter Set
Source: Yahoo! Japan
This set has other Pokemon on it as well, but hey, it's called the 'Dialga set'. That means it's Dialga-centric, right?
Battrio Pucks
Source: Yahoo! Japan
Battrio is an arcade game in Japan where you purchase plastic pucks from the machine (and get a random Pokemon), and then battle those pucks against another person (or computer). I held off on buying these for a long time because there aren't any Battrio machines around here (or anywhere else outside Japan, as far as I know) so it was pretty expensive for just a plastic puck. I finally caved due to the neat art, though!
Now that I have four, I believe that's all of the easy to get ones. The only other one I see for sale sometimes is usually over $100 so I'm not sure when or if I'll be going for that one! There's also a variant that regularly gets listed for over $1000...yes, no plans to get that one anytime soon. I'd rather buy a plane ticket, thanks ;)
Corn Flakes (Mild Chocolate and Sugar)
Source: Pokemon Center Tokyo
I picked both of these up at the Pokemon Center during the summer movie promotions. The one on the left is the 2009 edition, and the one on the right is from 2008. I don't plan on eating either of them!
Pokemon Center Cookie
Source: aftertheheaven of pkmncollectors
This cookie is from a tin sold in the Pokemon Center in summer 2009, which is covered in a horde of Pikachu. (If they hadn't had a sample case open at the Pokemon Center to show the cookies, I never would have guessed Dialga would be inside.)
I bought one of the tins, of course, but because I pulled Dialga out to put with the rest of my Dialga items instead of leaving him securely in the tin, he broke in half in my suitcase. :(
But then, aftertheheaven kindly agreed to get another of the tins to get me the cookie, he reached me safe and sound, and this is the one you see here. Thank you so much, Bunz! <3
Pokemon Center Cookie (大集合/Big Gathering Set)
Source: Pokemon Center Tokyo
These cookies are blind packaged with many Pokemon in the set, but unlike those in the above set, the packages are made so that you can't see who is inside until you open it. While eating the others here, I came across a Dialga one to add to my collection!
Individually Wrapped Hard Candy
Source: Toys R Us (Ikebukuro, Japan)
I bought three packages of these over various trips hoping to get a Dialga one, and finally got him! The candy is fruit flavored and doesn't have any design on it (as I know from eating others featuring less interesting Pokemon) so I'll leave it in the package.
Chocolate Cube
Source: I don't remember, but it was somewhere in Japan...
A chocolate cube featuring 6 different Pokemon, including Dialga!

Candy Pack
Source: Pokemon Center (Yokohama, Japan)
This is one of the kinds of candies I used to fill the blue candy bag at the Pokemon Center. But, they didn't have this kind at the first Pokemon Center I went to, so I had to buy an extra bag to get this one. ^_^;
Pizza Pan (Flavored Bread) - 2008 version
Source: soddymothdust of pkmncollectors
I saw a picture of this on the Pokemon Goods site and thought it'd be discontinued before I had a chance to try it, but soddymothdust kindly volunteered to get one in Japan and ship it over to me. It was light and fluffy and delicious, just as I expected!
Pizza Pan (Flavored Bread) - 1st 2009 version
Source: Olympic (grocery store in Japan)
I was really excited to find that the pizza pan had been re-released, and bought several of them when I found them in Japan. However, it seems that they added ham to this version, which I don't like quite as much. Ah well, still Dialga food!
Pizza Pan (Flavored Bread) - 2nd 2009 version
Source: crunch385 of pkmncollectors
I was surprised (and excited) to find that Dialga had a third version of his pizza-flavored bread released, but my friends in Japan couldn't find it for sale anywhere. Since you pretty much to have to have a contact in Japan to get these (as the chance of them showing up in an auction is almost nonexistent), I had almost resigned to the fact that I'd miss out on this one.
But then, crunch385 kindly offered to send me one, minus the bread! I'm now happy to have all 3 versions in my collection. ^_^

Mini Gum
Source: Mitsuwa (retail store)
Part of a set with various Pokemon. I tested on a Pikachu and the gum itself is plain white without any design, so I'll just keep him in the package here.
Dialga and Palkia Ramen / Donburi Bowl
Source: Yahoo! Japan
This was one of my most wanted items for quite a long time.
Although I usually would consider something with both of them on it to not be Dialga-centric enough to pine after, the solo Dialga in the center of the bowl (and also on the bottom) make this an important piece in my collection.

Summer 2008 Movie Promotion Glass Dessert Bowl
Source: 7-11 (Shiki, Japan)
Although it's not one of my rarer items, I absolutely love this bowl. It's made of glass and features beautiful designs all around. I won it myself from the promotional 711 lottery (and an extra to eat dessert from!)

Glitter Plastic Mug
Source: Toys R Us (Ikebukuro, Japan)
This plastic mug has a section with water in it, in which small sparkly pieces of confetti float. Shake it and see them fly!
Tumbler with Floating Stars
Source: Yahoo! Japan
This is from a series of cups where there is water within the plastic layers, and little things (like plastic stars) floating around in it. You can refrigerate (or freeze?) the cup to make or keep your beverage cool.
This one has Dialga on one side and Palkia on the other. The other cups that I've seen in the set featured Arceus, Giratina, and Gizamimi Pichu.
Plastic Tumbler
Source: crunch385 of pkmncollectors
I've seen quite a few of these sets now - I believe they're UFO prizes and feature 4 cups each. Here is one from the 12th movie promotion that features Dialga, Palkia, and Giratina on different sides.
Plastic Mug
Source: Toys R Us (Ikebukuro, Japan)
This mug from a children's dishware set features Dialga on one side and Palkia on the other. I use the plate from this one for my cat's food ^_^

2007 Movie Promotion Prize: Ceramic Mug
Source: Yahoo! Japan
Even though this item isn't totally Dialga (it has Darkrai and Palkia on the other sides), it's a gorgeous piece. It's hard to find actual ceramic Pokemon items, as most are plastic so as not to be easily broken by kids.

Metal Coaster
Source: eBay
A nicely sized metal coaster that you can set your drink on. Large enough to fit a fairly large cup or glass, but I won't be using it since I'd rather keep it a part of my collection.
Ceramic Dialga/Palkia Mug
Source: Yahoo! Japan
This mug has Dialga neatly on one side, and Palkia on the other. It also comes with a plate that shows both of them, but mine broke during shipment. Fortunately, since that doesn't have Dialga singly, I don't need to replace it~

Plastic Drinking Cup
Source: Yahoo! Japan
So, a funny story about this cup. Some months before I got this cup, I had another one, that looked like this. Pretty much the same pose, but it only had Dialga's face, and it had a bunch of other Pokemon on it, which I really prefer not to have for this very-focused collection. A fellow collector friend saw the cup and got really excited about it, because those other Pokemon were all ones she liked that were rarely featured on anything, and together even more rarely. I traded the cup to her for a few other goods that are now on this site.
A while later, I saw another cup set with different packaging and different other cups, and bought it thinking the Dialga cup could be a good replacement. I was excited to see that not only did it have Dialga by itself, it also featured the Diamond design, which I love! I'm now quite glad I made that trade ^_^
Plastic Drinking Cup
Source: lunarchik13 of pkmncollectors
This cup isn't quite a mug, but it's not a tumbler either. What can I call it?

Spoon
Source: Pokemon Center (Hamamatsuchou, Japan)
A spoon! There's also a fork that has Palkia on it, and a fork that has both of them on it as part of a child's dining set.

11th Movie Master Ball Image Projector
Source: Yahoo! Japan
Just like the one below, but from the 11th movie instead. This
one
projects half a 'battlefield' (with Dialga on it of course) that can
match up to fight with one of the others in the set.

10th Movie Master Ball Image Projector
Source: meowthcollector of pkmncollectors
It looks like a normal Master Ball (with a shiny spot) in the middle, but it actually projects an image of Dialga onto the wall. How cool!

Miniature Plastic Screen
Source: Sunyshore!
This small screen comes with a number of stickers you can put on the other screens. But I only needed the Dialga base for my collection~
Spinning Block Gachapon Toy
Source: Yahoo! Japan
This isn't really a pure Dialga item since it has Palkia, Giratina, and Regigigas on the other sides, but I generally allow things in if they have one full side of just Dialga. This is part of a Gachapon set from the Giratina/Shaymin movie.
Metal Collection - Hexagonal Coin
Source: Yahoo! Japan
The Metal Collection figures are one of those series for Pokemon that's continued for over 10 years. There haven't been very many Diamond and Pearl Pokemon featured in them, but I was hoping Dialga might get included.
Eventually, he did, but instead of a figure they chose to make a flat (although relief) metal coin. Ah well, I can't really complain, most Pokemon didn't get a figure cast in sterling silver like Dialga did ^_^;
Pokeball (Covered) Gachapon Watches
Source: Yahoo! Japan, jaxtoys
Unlike the more serious 10th movie watch at the bottom of this page, these are more like a kid's toy. The cover is a Great Ball that lifts up to reveal Dialga (and the time along with him).
The darker one on the left is from the 11th movie promotion, and the one on the right is from the 12th movie.

Lens Cleaner (11th Movie) Stylus
Source: eBay
Yet another stylus, but this one has a flat lens cleaner on the end rather than a figure.
Bento Box Eraser
Source: Yahoo! Japan
Part of a gachapon set of tiny erasers, in the form of Pokemon-shaped bento meals.
Pokemon Center Eraser
Source: Pokemon Center Tokyo
A little eraser from the 12th movie promotion, featuring Palkia on the back.

Mini Eraser Cartride and Diamond Case
Source: Yahoo! Japan
This one is also part of a gachapon set, featuring most of the 3rd and 4th generation Pokemon games in miniature, with the cartridge as a tiny eraser. Another addition to my 'Diamond' collection!
Pokemon Center Coat Hanger
Source: Pokemon Center Tokyo
This is part of a set of brightly colored coat hangers sold in the Pokemon Center, featuring 11th movie Pokemon like Giratina and Shaymin. I nabbed the Dialga one and split up the others with my friends.
Ravensburger Puzzle Ball
Source: eBay
I first saw this in BlazikenBabe's collection post on pkmncollectors, and considered asking her to get me one, but I found one on eBay UK so I didn't have to put her to the trouble. I was surprised to find that the ball was made of plastic instead of normal puzzle cardboard, and found it enjoyable to put together.
Miniature Brace / Wristband
Source: Yahoo! Japan
I spotted this band in a huge lot of other random items, and
had to get it since I'd never seen it before. I knew it would be too small to
wear, but it's a hard plastic and you'd have to have a pretty tiny
wrist to fit it!
Suction Cup Wall Hook
Source: Retail store in Japan
I'm pretty sure I bought this item in Japan, but it got overlooked for several updates, and I've since forgotten exactly where I bought it ^_^; It says that it holds up to 500 grams in weight, though - perhaps I should stick it on the wall and hang a bag or purse from it!

Adhesive Tape
Source: Sunyshore
It had Dialga on it, I bought it. That's really all there is to it.

Bath Crayon
Source: Yahoo! Japan
To make bathtime more interesting, you can draw on the walls of the tub with this crayon! At least, that's what it seems to be for.

Large Dialga/Palkia Pillow
Source: Eileen (a visitor to this site)
This pillow (still in its shrink wrap, which is why it looks all plastic) was sent to me from a very kind visitor to this site. Thank you!
Shoe Clip (Full body version)
Source: Yahoo! Japan
One of several different 'Croc clips' to put on shoes.

Headphones Set
Source: Yahoo! Japan
I thought these were some sort of caps when I bought them, and didn't realize they were headphones until they arrived. Oh well! The set is actually a pair of Pikachu headphones, but it comes with a Dialga and Palkia cap in case you want to be more macho, I guess.

Plastic Toothpick
Source: Sunyshore!
A small toothpick with Dialga's face on the flag, from a set sold in the Pokemon Center.
Baseball Caps (older version and summer 2008 color version)
Source: Yahoo! Japan
I couldn't find either of these (or any other hats) in Japan, so I had to import them. I think Dialga has a lot more hats than just these, but like the other clothes, they're a bit expensive and hard to display, so I only have these for now.
Cupcake Foils (2008 and 2009 versions)
Source: Pokemon Center Tokyo
When in Japan, I try to buy everything I see (and don't have already) that had Dialga on it. That included this miniature cupcake foil in 2008, and they made a new version in 2009 for me to pick up as well!
Tissue Packs
Source: Pokemon Center Tokyo, Yahoo! Japan
As you might have noticed from things like the above, they have a wide variety of Pokemon items in Japan. These are from packs of 6 tissues featuring Pokemon or Pokemon-related things (such as the Pokedex or Pokeballs). Dialga was actually featured in 2 different packs in 2009, so I grabbed both when I saw them in stores. The one on the upper right is an older version where I bought the set on Yahoo Japan.
These will remain in package and unused, but I can't say that for the Pokemon in the set I don't like as much ;)
Pen Caps (2008 and 2009 versions)
Source: Pokemon Center Tokyo
A cap to...keep a pen's ink fresh, I think? Dialga got a new one with the 12th movie set as well!


Jakks Pacific Wood and Mechanical Pencils
Source: Amazon.com
While browsing Toys N Joys for images of some items on my wanted list, I happened upon these pencils, and if I squinted, it looked like Dialga might have his own pencil in each set. I started to add them to my wanted list, but then I realized I should look a little more, and I found both sets on Amazon without much trouble!
Pokemon Center Game Pencils
Source: Pokemon Center (Hamamatsuchou, Japan) and Sunyshore!
These are game pencils that kids can bring to school to play when other games aren't allowed. Each part of a set of 3, these feature Dialga!
Pencil Collection Pencils
Source: nanoplasm of pkmncollectors
These are from a very large set of collectible pencils featuring awesome art. You can't really see it all that well on mine since it's hard to take pictures of all sides of a cylindrical object, but here is a picture from Nanoplasm that shows the art better.
Pokemon Center Umbrellas
Source: Pokemon Center (Hamamatsuchou, Japan)
These umbrellas were so much trouble to get home from Japan. They were too long to fit in any of my suitcases or boxes (they don't fold up) so I had to have them stowed with my suitcases on both of the flights home. I'm glad that neither of them got lost in transit! And I had to take their pictures outside because they were to big for even one of them to fit on my table ^_^ They look pretty much the same here, but there are 2 different shades of blue.

Zippered Pillow
Source: Yahoo! Japan
This one has the same design as the cube pillow below, but
zippers down the middle.

Square Pillow
Source: eBay
A square pillow featuring Dialga.
Plastic Wristwatch
Source: Yahoo! Japan
I'd long thought that this was from the 10th movie promotion, but while searching the Diamond auctions more recently I saw a copy of the game with its inserts and advertisements - including a mail-in form you could use to purchase (or claim?) these watches. Now that I look at the case again, it pretty obviously says "Diamond" on it, not "Dialga vs Palkia vs Darkrai". Whoops, guess I wasn't paying attention!
Blue Wristwatch
Source: Yahoo! Japan
This is an early 2010 release, and the packaging features the four Sinnoh dragons along with Lugia and Ho-oh. (Glad to see Dialga's not getting neglected for Heart Gold/Soul Silver!)
The watch itself looks to be of much better quality than I expected from the auction photos - the center is metal with a thick plastic ring around the outside, and the strap looks to be fairly sturdy. I still can't wear it unless I get an extra one, though!
The picture was dark on the face of the watch, so here is a closeup of the watch face.
Felt Plush Kit
Source: Yahoo! Japan
I was tempted to put this in the plush section, but I intend that to be a resource for anyone who wants to know about Dialga's more official plush. I originally bought one of these on Yahoo Japan that didn't have the stuffing or fabric included, but I since found one in a fabric shop in Japan that has everything! So I'll try and make him sometime.

Paper Standee
Source: Sunyshore!
This isn't really a flat item anymore, but it was when it originally joined my collection. It's part of a large set of Pokemon you have to cut (or punch) out and assemble yourself.
Pop Up Card / Plate (Paper Standees)
Sources: blackjackrocket of pkmncollectors, ambertdd of pkmncollectors
These actually come with the refill candy for the Pez-type Pokemon grabber figures. (Sadly, Dialga did not get a Pez-type dispenser of his own, to my knowledge - only Darkrai and Palkia.)
The older version on the left says 'Pokemon Pop Up Card' on the bottom, while the newer one (the 11th Movie edition) says 'Pokemon Pop Up Plate', though they're pretty clearly the same series. They both have one full image side and one side with Pokedex information.
Foam Cut-Out 'Figure'
Source: Yahoo! Japan
He sure looks odd with those exposed shoulders, though. *tries to look away from indecent Dialga*

Dialga / Palkia DS Limited Edition Lite
Source: Pokemon Center USA (and my boyfriend)
This DS was given to me by my boyfriend for my birthday before I even started collecting Dialga, because he knows I love special Pokemon edition Game Boys. I have not used it, so it's been kept neat and clean in the original box. Maybe he will use it if we get to go to another Pokemon con someday!

Pokemon Center Toilet Paper
Source: Pokemon Center (Hamamatsuchou, Japan)
Yes, I bought the Pokemon toilet paper. I have not yet opened it to see who's on the sheets, though.

Dialga / Palkia Alarm Clock
Source: Yahoo! Japan
I had seen this on YJ quite often throughout my collecting, but had passed it up since it's not Dialga-focused. But it's such a neat (and 3D!) item that I decided to get it anyway. I would not recommend it as an actual alarm clock, though, since the only way to turn the alarm off seems to be via a tiny switch on the back!