From ETH Institute for Dynamic Systems and Control, Research D’Andrea. Smart spinning discs inside a cube allow it to balance on a corner and conceivably jump to a different corner. See videos.
Check out the other projects, too. Balancing Cube is good. So is Distributed Flight Array. And watch the quadcopters throwing a pole at each other–and catching it. I feel like I’m looking through a time machine. But maybe that means I’m just getting old.