USB Charger holder

thingiverse

This is a holder that you can screw down to a desktop for the USB charger https://www.amazon.com/gp/product/B08YNPXPRW/ also known as Wenter 11-port USB Hub Splitter, assuming you're not using it for data. (If you are, you'd have to modify the end of it to have room for the data cable). It will hold the AC adapter plug in place as well, so it won't get unplugged easily. My kids are using it for charging tablets, etc., and it was falling off the table because the cord was just barely long enough. It prints in 2 pieces because my Ender 3 v2 print bed isn't big enough for the whole thing. They fit together kind of like puzzle pieces, with one on top of the other so that the top one screws down to hold the bottom one in place.