Amazing Leap Physics Sandbox Demo by PoHung. Get into a sandbox and play around with some
interesting 3D obstacles. Use both of your hands, to get into the 3rd dimension. Video & Download:
PoHung has also other great demos you can find in his bitbucket space: https://bitbucket.org/pohung/
Download Physical Sandbox : https://bitbucket.org/pohung/leapphysicssandbox