The ring stand on my iPhone 16 Pro Max's Anker Ultra Magnetic Case broke. I whipped this up as a replacement. Note that there is a captive pin that will absolutely go SPROING into the blue yonder when you take yours apart. I replaced mine with a very small piece of 1.75mm PTFE filament - take a small piece of filament, push it home, then clip it with flush cutters. During assembly, I recommend applying tape to the outside of the case/replacement cog once you get it into place. That way it doesn't move when you put your phone in.
The author remixed this model.
Enlarged and added to my replacement cog in order to add simple kickstand function.