Is there any way to make your own membrane-switch control panel overlay? Not a fancy backlit one with tactile bubbles, but something simple. I was thinking maybe I could print the layout with a color laser printer onto some kind of plastic, then glue onto a membrane. Does something like this exist?
In my area, there are no shortages of commercial firms that can make these, but I don't like the long faces when I tell them I only need one.