Great model to have on demand, print as many as you have outlets in your home that you would like to cover.

Designed to hold tight without straining the outlet beyond normal use.

Slicer says 1.64g of filament, so assuming a $20 spool of filament these are about $0.033 each. Typical Walmart or Amazon pack works out to ~$0.20 each, so these are an order of magnitude cheaper.
 

***PRINT UPRIGHT!!***

Print with the prongs touching the bed so that the layers travel the length of the prong! Model is oriented correctly for convenience. If you print with the face flat then you risk the prong breaking inside your outlet easily leading to a much more hazardous situation! 
 

Can print without brim or supports etc. Two (2) walls thick is enough to make the part solid with a 0.4mm nozzle, no need to bother with infill settings for this part. Pictured parts were printed on Bambu Lab A1 with VOXELPLA PLA Plus (Pro) Cool White.