This is my Remix of the mrhasan Headphone Holder, with some modifications to make the parts more easily printable without requiring support and to add a little design flair of my own.
The pins may need to be resized to fit the holes without drilling them out.
I glued the parts together, but with some fettling the pins could be made to be a friction fit.
There are four indents in the bases of the side parts, to allow the use of 8mm sticky butter feet.