Summary

This handy device allows you to hang a pair of headphones from any flat vertical surface with a 1/4in bolt, screw, etc. It was originally designed for me to mount my headphones onto my home built computer cart made of 80/20 15-series aluminum tubing as seen in the pics. I discovered that if you print two sets of these hooks, it also works to hold a PS4 controller.
It is three easy to print parts, the base and the left and right hooks. They simply slide in place and are held there by the pressure of the plate onto the vertical surface. I would recommend a bit of super glue on the plate slot for extra strength.
The plate is 1.5in x 1.5in and the hooks stick out 2in.