Updated v2 is here https://www.printables.com/model/604855-xtouch-screen-mount-for-the-p1ps-phone-holder

I created this mount b/c I did not have space next to the screen due to another mod.
There are two versions ; For one you'll need two 3x4x5 heat inserts and two m3x6 screws. Other you just need m3x6-8 screws

Added 6x3 Magnet versions - not tested

Since asked couple times, here is the projects page for this design ( obviously not my work )
https://xperiments.in/p1touch/