I needed an easy way to keep a USB charger near my camera when it was on a tripod so I could keep it charged while doing longer video shoots or timelapses. I found that the 65w Anker 735 was a nice little charging cube that allows to for plenty of power to run the camera as well as charging a few other USB accessories. My specific tripod has a 16mm diameter leg and it snaps right on and holds nicely.

This mount is very easy to print, I used PETG for added flexibility and printed it with just a small support on the bottom only to help bridge part of the cutout for the power cord. I purposefully made the power cord cutout larger than it needed to be in case other cables have a larger plug.

I know this is going to be a pretty niche print but it wouldn't be hard to modify to suit a different use case.