Headphone holder (for a shelf)

Print it, drill a hole in your shelf, screw it in.

I uploaded this because I use this thing ALL THE TIME! So it might be useful to someone else. I've included a version without the bevels in the corners where it's in contact with the shelf. I've also made the hole for the 3.5mm jack bigger, at the time of printing I didn't account for shrinking but to be honest I've not tested this new hole size myself