This mounting plate for Raspberry Pi can be glued or screwed to a panel or inside a project box. The Pi holes are designed for 2.5 mm machine screws, but I found out I don't have a 2.5mm tap on hand - so, I mounted mine with #4 wood screws. Works fine. I'll probably use CA glue to mount the assembly, but there are 3mm holes for mounting with screws.
MakerGeeks Raptor PLA at 215C.
Fusion 360, sliced in Cura 3.2.