I have three that are collecting dust.
I had plans to build a supergamegirl, but with tablets so cheap, and work so busy . . .my ambitions for the pi's just died.
I also ended up buying a 50 dollar ubuntu intel computer stick which was great, and replaced the raspberry pi for emulation.
I have a friend who has a 3d printer and tons of electrical engineering gear, who just loves his, and does tons of products with them.