Pegboard power plug holder

The circuit tester and the grounding plug adapter are probably the most common tools that I lose. This 3D printed fake socket means that I can keep the tester and adapter in a known obvious location and not have to rummage through boxes for them.

A new version of this is available for Multiboard, see [Multiboard Power US120V Plug Holder](https://www.thingiverse.com/thing:6885735)