A headphones holder wall mount with a peg to hold the cable.

I've included a 45mm depth version that will hold a large pair of headphones, and a 65mm depth version that will hold two medium-size headphones.

I use 3M Command Picture Hanging Strips to mount them to the wall. (https://www.amazon.co.uk/Command-Picture-Hanging-Strips-Removable/dp/B00OI6F67O)