I'm pretty sure it was here on the AGF where I've seen this - someone made a decent looking wood insert to go in place of the (removed) barn door electronics....
here's a discussion from 10 years ago....
https://www.acousticguitarforum.com/...d.php?t=259055
There's a good picture in this thread:
https://www.acousticguitarforum.com/...d.php?t=586640