Minimal Magnetic Phone Holder

Minimal but sturdy magnetic phone holder.

I just wanted to be able to park my phone off the desk surface, next to my monitor seemed ideal.
I made this holder to precisely match the dimensions of these magnets:
https://www.amazon.com/gp/product/B06XD2X45M/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
( not an affiliate link, just for reference)

The magnet holds in place without glue, just press it in.