In order to facilite robot-mongering, I've been building a 3D printer. Specifically, it's a Prusa i3, assembled with an MDF laser cut frame, and a casual disregard for instructions.
I made some really simple telepresence robots. If you poke one, the other one waves. They were even on TV!
A small project -- a Valentine's day card that can blink out a message on an 8x8 LED display.
Because everybody wants to be Tony Stark.