My music box Pi project has been on hold because it’s been too cold for spray paint, plus it’s working so taking it apart to finish it hasn’t been appealing.
Meanwhile, I’ve started a Pi crate case for another Pi2. Starting with a $2 plywood 4" crate. Initially the plan was to mount the Pi and display together with the ports sticking out the side of the crate, but it proved too tricky to get the ports and display right while holding the Pi securely. I mounted the Pi to the crate, and I’ll run extender cables to the display, mounted on a foamcore backplate.
For paint, I’m thinking gloss black, with brass on the corners. (Because those are the paints that I have, as well as radioactive green.) A dremel tool with a cutting wheel would have been perfect for the port hole in the back, but what I had was a drill and a keyhole saw. It’s a bit raggedy, but I’ll glue some bits back on and smooth before putting the paint on.