Hello,
I’ve just received my Frame.work 13 DIY… SPLENDID 
! I’m looking for a protection for the back of the computer (where the FRAME.WORK logo is)… to protect it from scratches in particular… …
Do you have any ideas?
If you really only need protection from scratches then perhaps a laptop skin.
Expensive for what it is, imo. Framework Laptop Skins, Wraps & Covers » dbrand
You could probably create a DIY skin with vinyl car wrap film or vinyl contact paper.