Hmm... Here are a couple different categories of things I'd buy:
Category 1
A PSP
Riviera: The Promised Land for PSP
Yggdra Union: We'll Never Fight Alone for PSP
The rest goes to a charity
Category 2
A GBC or GBA (just to play my GBC games <3)
A couple Wii games (Brawl and Okami, for that matter XD)
The rest goes to a charity
Category 3
Riviera: The Promised Land OST or the Remix ST
Yggdra Union: We'll Never Fight Alone OST or the Remix ST
Legend of Zelda: Wind Waker OST
The rest goes to a charity
Category 4
Either May/Haruka's cosplay outfit, a Team Magma cosplay outfit, or, if I can find it on eBay or something, one of Yoh Asakura's outfits gone cosplay <3
The rest goes to a charity
Hmm... I sense a small pattern...