This is a headphones holder for your desk I designed! It's for desks with a thickness of about 28mm. I added the source file (. Igs) if you will need to make any alterations (or just ask me nicely).
The two "prongs" are somewhat converging so that they grip the table better. I recommend using something more flexible than PLA such as ABS or PETG.
Printed on a Maker's Tool Works MiniMax.