Crazyflie from http://www.bitcraze.se/ http://www.bitcraze.se/ is pretty cool. I own one myself, and I like it a lot. This is a tiny fully opensource quad which

Crazyflie from http://www.bitcraze.se/ http://www.bitcraze.se/ is pretty cool. I own one myself, and I like it a lot. This is a tiny fully opensource quad which can be flown indoors. Obviously, because of it's tiny size it doesn't fly for too long and don't lift much.