[fnordian_slip]

Some of these things are genius if you create overcomplicated marble runs, like https://karakurist.jp/?p=2196

A bit too annoying to build with wood, but if you're into 3D printing and whimsy, this page is a goldmine.

[xg15]

Yep! Found the YouTube channel a bit more accessible (if you don't speak japanese) : https://m.youtube.com/@karakurist

Found the "unorthodox" uses of balance wheels interesting. Not everything that ticks is a clock, apparently.