Back cover that fits together with the print:
https://www.prusaprinters.org/prints/37961-prusa-mini-display-usb-mod

Remix of:
https://www.prusaprinters.org/prints/32508-prusa-mini-lcd-back-cover-upgrade

Update: Realize I did not account for the screw hole on the backpart so I simply cut it away since it snaps on the back anyway without the help of screws. I.e. Mount the new front to the Mini first and then simply snap the back cover on afterwards.

Print instructions

0.20 is good enough

Print it "on the side" and there is no need for supports.
Good to use a brim though to secure adhesion.