I 3D designed a hook in AutoDesk Inventor to go on the side of my desk for my Ausdom M06 headphones.
This hook should fit almost all headphones but the part that hooks onto my desk is a set size for my desk. The end that attaches to your desk is exactly 1.49", the other end is exactly 1.28" for the headphones to hook on and it's 3.2" tall.
I have included the .IPT file so you can customize it in AutoDesk Inventor.
If you like my designs, consider throwing me a dollar or two to keep the projects coming!