I didn't have room on my desk for my desk speakers so i built a little desk extension.. and then i figured, well now i need a cup holder for my travel mugs... and then i thought, well why not a phone stand, too? I might reverse the angle of the phone stand so it can go on the back of a desk and have the phone facing you.
Also will likely put more effort into the cup holder and give it a base so you can put other cups in it besides tapered cups.
The thumb screw does hold the thing to your desk fairly well.
Printer:
Prusa Original Mini+
Supports:
Yes
Resolution:
.2
Infill:
15%
Filament:Sunlu PLA Grey
Notes:
I only paint supports on the overhang where it attaches to the desk.
The thumb screw should probably be printed at .15 or .10 to make sure it threads properly but it worked for me on .15.Fusion 360