This is a throttle box that is compatible with the 3 slider controls by vlish, here: https://www.thingiverse.com/thing:4212923.

While I would love to have something like https://www.thingiverse.com/thing:4606456, I needed something I can permanently mount on the underside of my desk without being an encumberance for other people using my computer.

This will fit 3 60mm linear potentiometers, plus whatever controller board you use. I used a BU0836A Leo Bodnar board and it also controls my rudder pedals, providing a place to mount all my wiring permanently.

It's slightly modified from the picture, and I've provided the Fusion 360 file as well, so you can modify it for your own needs.