The Institute for Dynamic Systems and Control in Zurich has developed a cube that can stand on its own corner without any outside help. The Cubli is a 15 × 15 × 15 cm cube that can jump up and balance on its corner.

Now this is a Propper bit of tech, to be used to further the advancements of droids in space etc, but to be honest, I just really want it on my desk walking around my laptop