Just playing around with this spiral thing I got as a present years ago. I don’t know what it’s called but 90s kids should know this.
Basically you stick a pen or pencil in one of the holes and let the gears do the work. Part of the fun is not knowing what it will look like.
It’s been ages since I used this so I had no idea how it will turn out. But one of the holes had a lot of ink around it so I guessed it must’ve been a good one.
I wasn’t disappointed with the results.