(Thanks to Nevet) Israeli Shai Goitein designed the PowerUp 3.0 – a tiny battery-powered propeller and rudder. Fold a paper plane, attach the propeller and you control the plane with your smartphone. Shai asked for $50,000 on kickstarter. He actually raised $1.2 million.
http://www.broaderview.org
http://online.wsj.com/articles/paper-planes-transform-into-tiny-drones-1402280183
https://www.youtube.com/watch?v=q9bpp7zmM_A&feature=kp
http://www.poweruptoys.com/