For the sake of my own vanity, here is a list of the Hetalia stuff I own.
Hetalia
Books:
Volumes 1, 2, and 3 (special edition) of the manga
Hetalia: World Wide Walking anime companion book
Animage magazine from Jan. 2010 featuring France and England's voice actors.
Character CD Perfect Guide
Hetalia Boys Digest
Plushies:
America
England
Mochimerica
Hungary
Multi plates:
No. 11: I Love Hamburger (America)
No. 19: Rejection (England)
No. 15: Oresama (Prussia)
No. 16: Delicious (America)
No. 19: Baka Baka (England)
Kotokubiya One Coin Grande figures:
All 9 in the set #1: England, America, China, Japan, Russia, Germany, Italy Veneziano, Italy Romano, and France
Coasters:
USA & UK: DVD release
America, England, and France: 1st set
Spain & Romano and Prussia & Austria: Manga volume 3 release
Sweden and Iceland: 3rd set
Trading Cards:
Finland/Sweden
America, England, and France *Special* cards
(To be updated)
Kare Kore Trading Figures (Mascots):
Finland, Sweden, Cuba, Russia, Seychelles, Latvia, Sealand, the White Flag, America, England, France, Canada, Poland, Hungary, Austria, Prussia, Switzerland, Spain, Estonia, Japan, Greece, Italy Romano. (Close to the whole set!)
Metal Fastener Charms:
Sweden
Finland
America
England
Keychains:
Set #1: America, England, Germany, N. Italy, Japan, and Austria
Pins:
America
England
Misc:
England, America, and Austria fabric buttons
Prussia and Germany official postcard from a DVD release
American apple jam cookies + included America, England, and France stickers
America/England/France Allies make up bag
Fanmade stuff: US/UK calendar with matching print and button, all of the available self-made paper dolls, US and UK stickers, two US/UK fanart prints. And a mochimerica made out of clay by yours truly!