My attempt to create a holder for my Kasa E70 Pan and tilt camera. I used https://www.thingiverse.com/thing:5246194 by shizby as an idea starting point.

The camera fits with about 1-2mm of room to spare if your printer isn't 100% calibrated.

The walls and floor are about 4mm thick which could be brought down if you want to make the model a little smaller. The holder is very solid and holds the camera very well.

The screw holes are 4mm, which can also be made smaller to accommodate smaller screws.

I included the OBJ file for editing.