A headset stand of some sort. Your desk looks kinda crowded so I recommend something like this. Idk if you have a table leg that is perpendicular to your floor bec I only see a diagonal one. It looks like you can screw it on the side of the front left/right side if you don't have cabinets. If you don't care about losing a little bit of desk realastate then you can buy a regular stand. And if you have carpet flooring then I would try to put pc on the desk if you have room. Helps the power supply breathe (depends I'm no expert). Also, the guy that said stretch wallpaper is good
I'm all for the DIY but man you can pick up something like this from amazon for like $7
Amazon! Yocice Headphone Stand Hanger,Headset Holder Mount,Hook Aluminum with Strong Adhesive Tape for Headphones (Black- HH03) https://www.amazon.com/dp/B07PQ334GJ/ref=cm_sw_r_cp_api_i_zJ.VEbDW33E8M