Improved command strip headphone holder

Remixed lazerlords headphone holder to use medium command strips instead of large ones because they're cheaper and I have a bunch already. Also added a peg at the bottom to loop your cord around and scaled down the size of the headphone rest a little because most headphone don't need that huge an area to sit on. That being said if you do have extra fat banded headphones it really easy to simply scale the z up to as big as you need it.