I wanted to be able to see my Kill-a-Watt EZ that I have my printer plugged in to, but with my printer behind a UPS it simply wasn't possible to put this somewhere visible. This is a simple little three-part print to mount a standard N5-15 duplex outlet hanging from a shelf with top clearance for the Kill-a-Watt.

Two little wood screws hold the dovetail piece in, the solid wall portion goes to the rear. Install an outlet (I just whacked the end off an old C13 power cable) in to the box and slide it in on the dovetails. Voila!

Suggested to use PETG, but my PLA+ prototype is working fine so far. As always please use caution when working with mains power!