I wanted something compact, simple to make, and then I removed the magnets' holes, added a short pin and resized the hole in the other part so that you can just push one part into the other. I don't know if it will become loose after some time, but right after printing it's pretty nice.
The original size can be a bit unstable for larger phones in vertical position. You can resize in your slicer, maybe by 15%, and with circa 10 cm lenght, it became much better for me.
I printed this one in PLA from Tecbears, using a Sovol SV07 Plus, Cura slicer, 200 degrees, 75 degrees bed temperature, no brim, no supports. Other configurations I used: 0.3mm (extra fast); speed 240 mm/s; acceleration 6000 mm2/s; fan speed 30%; infill pattern: grid; 15% infill density.
The author remixed this model.
Removed the hole for magnets and added a small pin, resizing the hole in the other part