A mechanical device for braiding 3 threads

This is a box that has 4 locking plugs. No matter what direction you tilt the box in, at least one plug will lock the lid in place. The only way to open the box (without destroying it) is to spin it around quickly, forcing all 4 pins out to the side.

http://www.mariusgundersen.net/2010/01/15/centripetalbox/

The Software Clover