You can print this with fairly low resolution, and it completes quickly. No special efforts required, no supports.
The author remixed this model.
There are a bazillion headphone holders around, but somehow never exactly what you are looking for. Finding something close and modifying seemed to be in order. So this is just a simple remix of @dreimal_8's nice plain headphone holder.
I changed the size of the holder arm and thinned some elements that didn't need so much material for sufficient strength. I also removed lots amounts of material with some through holes to make it lighter yet still strong. There were various mesh fixes and simplifications, chamfers and such that I felt compelled to apply.
I find the big filament-saving holes also open opportunities to manage cords or attach other items as well, so see how it works for you. A couple of screws mounts to the underside of your wooden desk.
Thanks for sharing your design @dreimal_8, it was a good starting point.
Design Date: Aug 2023