I wanted to mount an extension cord to the back of my table to add to various cup holders I have back there and as I could not find one I made one. Printed in PETG, .6 nozzle, 2 perimeters, like 15 per cent infill and it feels as sturdy as it can get with a satisfying click upon mounting it in.

If anyone by any chance wants me to make it fit the shape of their extension thingy feel free to message me and I will edit it to fit yours.