I've seen a few that looked a lot like this actually. For example: http://www.amazon.com/ROBOTIC-3-Channel-Flying-Ball-Helicopter/dp/B0090RM2WS http://www.amaz

I've seen a few that looked a lot like this actually. For example: http://www.amazon.com/ROBOTIC-3-Channel-Flying-Ball-Helicopter/dp/B0090RM2WS http://www.amazon.com/ROBOTIC-3-Channel-Flying-Ball-Helicopt... The main difference in the research here just seems to be the separation between the outer ball and the stabilized machinery inside it.