I was thinking I could make a device that displayed digital films but that had to be accessed through analogue means. So you’d crank the handle to move the film along – handle as movie slider.
Effort would speed up/slow down the film. Possibly on release it begin to wind backward.
So to turn a rotating action (potentiometer?) into a fixed linear value (length of movie). A small screen in a crafted body with a handle that can access a film on a flash drive/youtube.
A screen embedded in a small box – see Hazel White’s Hamfarer’s Kist – with handle on the side to control position in the film.