Minimalist Europlug to UK AC adapter

This is a minimalist adapter to allow an Europlug plug to fit into a UK AC wall outlet. The adapter has only one pin, which, when inserted into (the earth hole of the) wall socket, opens the shutters on the line and neutral holes, so that an unearthed Europlug plug can be plugged in directly and then be kept stable in place.

The adapter is made of two pieces that must be glued together. Version v2 of the body is an even more minimalist design.

Warning: this minimalist design dispenses with