The Mk 1 Squelchy...

[eyeball kid]

The holes for the buttons are (despite the crappy drill bits) very good, it's the rectangular window and squonk hole that are the issue...

Pick up a second hand milling machine tubby.There are bound to be further projects.

 

[eyeball kid]

There aren't any DNA75 sqounkers yet or I would have, I'm looking at the Likes of Sunbox and Svapiamo for them to bring them out...

Check out this bad boy.
If a little ott they have some quite reasonable drill conversion tables that I use for guitars quite successfully.