Summary

A simple solution for spot the place for headphones.

There are two versions, depends on position - top and side. The top hook may be useful for storing headphones under the shelve.

The source is here lost, thanks to Onshape strange behavior.

Updates

Top hook v2 - reinforced hook. The first version broke down under the weight of the Audio-Technica ATH-M40X. Maybe because of PLA, maybe 20% filling. Anyway, I made a more powerful hook.