Hey OP - if your thinking about a smart knob with haptic feedback etc - check this open source project out that you can build yourself - its amazing:
https://github.com/scottbez1/smartknob
Video demo here: https://www.youtube.com/watch?v=ip641WmY4pA&t=1s
Oh man, this has been on my to-build list for ages, right up there with the 6 axis “3D mouse” build. I love the attention to detail.
I made a SpaceMouse the other day, it was really easy, mostly just the print. It took around an hour to assemble everything, I think? It also worked very well.