I've always wondered what it would take to build a custom keyboard.
I've got a few older keyboards I can rip apart to experiment with. And quite a bit of plexi.
My idea is to cut out (carefully) three sides, and then (VERY carefully) thin out the top. Then a little nub to be able to touch the contacts.
I'll have a plan in SketchUp, and it'll be easy to throw together.
Oh, and of course, EL panel for lighting....
*This is a quick throw-together of what I had in mind....