What to do?

I acquired an STM32F3 Discovery board and have no idea what to do with it. I was thinking a universal game controller to USB adapter. Just think, a box with every game controller from 1975 to 2001 usable on a modern PC with an emulator, a USB to SID adapter, game console memory card reader, something equally wacky. Put in the comments what I should build with this damn thing!