The Griffin Helo TC ($50) is a palm-sized helicopter that offers lots of indoor fun. This metal and polycarbonate heli ditched the standard remote to let users play pilot via an iOS app for your iPhone, iPod Touch and iPad, offering an onscreen "Touch-to-Fly" or accelerometer based "Tilt-to-Fly" controls. In addition, it also capable of charging over USB, as well as save three pre-programmable flight plans in the app. [source]