Headset/Headphone holder with custom screws for keyhole frame. Extra screw slots added to allow internal L bracket placement. 

The entire print can be done with PLA but for longevity the screws can be printed in PETG. 

Screw holes should be printed vertical so you'll need to add supports to the lip that keeps the headset from sliding.

Printed on Prusa Mini with 0.4mm Nozzle and 0.2mm Layer Height. Polymaker PolyLite PLA Pro.