Also, the Tama-Go will be in New Zealand soon, for those of you in the Oceania and Asian regions, keep an eye out! Keep in mind, too, that the Tamagotchi has a different name; it will be called Tamagotchi Connection Version 7.
http://planetfun.co.nz/toys/brand.asp?bid=49
http://planetfun.co.nz/toys/product.asp?pid=262
Gotchi Figures!
So as it turns out, some of the Gotchi Figures have a special function: items!
First, when you plug in the Figure, a box appears in the background of the screen. When Mametchi's figure is in, it's a toy chest; when Memetchi's figure is in, it's a wardrobe. Something different for every character.
Once it's there, you can use the Tama-Go Figure icon to access the shop to buy the items. The shop will only have a maximum of four figures at any given time.
After you buy the items, you can play with them!
I honestly don't know if you keep the items after the Figure's taken out, or if they're only available when it's plugged in. If you own a Tama-Go, please post a comment and verify!
Again, with much thanks to Ra of Tama-Zone for the wonderful images! Check out his Tama-Go logs for even more pictures!