The original design is excellent, but I didn't have a shelf close to hang it on. I designed these for the high school eSports team I coach, so I wanted something that was able to sit on a desk (or on the top of a computer). I extended the back further, then put a base on it. I finished it up with an embossed design (you can keep or delete that at your own discretion).

You may want to use a dab of glue to hold the arms on; we originally had an extra 1 mm solid on the back that provided some support, but it caused other issues with fit and durability. I haven't glued the arms on and so far it's working fine. I did not re-design the arms at all, so they are included as they were in the original.