A replica of the Avatar twin prop little plane thingies. Well, not really a replica, it was just an idea that came to me while working on a helicopter. Takes a bit of practice to take off and fly stable, but it looks very cool after you actually get afloat. Tip: face the propellers forward and accelerate at about 50-75% throttle until the wings kick in with the stabilisation, then gently take off with throttle 100% and propellers about 5-15° tilted forwards. You can work out exactly how it works. Also, yaw actually yaws and roll actually rolls, where pitch is for going forwards and backwards (besides pitching, as a nasty side effect of the bad alignment of the CoM and CoT while the propellers are tilted). Be careful with it anyways!