A piggybank which can fit a single coin. More information: http://mariusgundersen.net/projects/6/Bitcoin%20Piggybank

A cufflink shaped like an 18 tooth gear.

A mechanical device for braiding 3 threads

This is a smaller version of the centripetal box. It is approx. 4.3cm in all directions

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...

This is a cufflink Lego minifig upper body. If you add legs, arms and a head to it, then you have a complete Lego minifig cufflink. The best materi...

Upper body of a Lego Minifig

The reddit alien as a keyring

The Software Clover