I created a printable container for the awesome Deej build omriharel found here:
https://github.com/omriharel

I used these potentiometers:
https://www.amazon.com/dp/B09D7P3RWZ?th=1
Note: They're dual rail, meaning that they have two inputs, two grounds, and two outputs. The input pins are the outside pins on the 4 pin end, and the grounds are on the same half as the relative input pin on the other end. The output's are the two middle pins on the 4 pin end.

The lid screws on with standard M4 screws.