Headphone holder

Very simple idea: under-the-table holder for headphones that allows them to be covered by a tabletop from dust and sunlight. I wasn't able to find one - most existing ones are built in a way where headphones hang _near_ the table, not _under_ it - so I tried to create one by myself in FreeCAD.

Made for a table with **16 mm** top, so if your tabletop is different thickness, you need to adjust the model accordingly.

It's completely symmetrical and can be clipped to the table either side.