Simple Headphones Desk Hook
thingiverse
My desk has a square tube frame underneath a wood board top, so this hook snaps on to it. The far end of the bottom clasp is 33mm from the front edge of the desk surface, and the total height of bar and desktop is 35mm. There's a small support strut that gives it a nice rigidity. I have included the Fusion 360 file so you can customize the size. This is the desk these are designed around: https://www.amazon.com/gp/product/B08GSHL2N2. I have the 63" version but they should all be the same for this purpose. UPDATE: Added a "deep" version for the side of my desk where there are two square tubes under the desk surface. It's 53mm deep.
With this file you will be able to print Simple Headphones Desk Hook with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Simple Headphones Desk Hook.