Japanese artist @shinrashinge built a miniature mechanical projector with paper, cardboard, pencils, and what appears to be plastic spools. The design is simple but very effective. The movie--a sweet tale of love enduring into dementia--is a long scroll of stills that he moves with the pencils.
Here's a video of what the projector looks from the other side.
I think that if I can 3D print the spools, I could build one in my library's makerspace.
-via Sora News 24