This reminds me of various videos I've seen where people strap the guts of a quadcopter to various lightweight things to make them fly (the most recent being the Corridor Crew video on making a flying Nerf gun), and they just...work. (With much shorter battery life.) Of course, that's almost entirely thanks to the control electronics - that sort of active stabilization enables almost anything to fly. You couldn't do the same thing with a passively-stable R/C airplane, for example (speaking from experience).