I designed a cover for the back of my cousin’s guitar.
It has screw holes to screw on the back.
In hind sight, I would have designed with a second pocket, so it would go over the plate where the neck bolts on, and I would use small magnets instead of screws, but pretty cool for the first one.
It was cut with the Shapeoko XXL, using 1/8" ball EM, and designed with Vectric Aspire, by importing a photo, then tracing, and scaling to actual size.
Most of the 3D clip art was free .obj files from Thingyverse, and other 3D sites for 3D printers.