In the fever dream that was my youth, I was enamored with an odd sketch on Sesame Street featuring a ball that goes up and down a long, windy track before ending up as a pile of powder. This sequence ...

Pincho balls are circulated like a Pythagora switch by combining wooden handwheel handles, gears, rails, etc. with drums, vibratophones and bases, turning the handwheel handle, and when the pachinko ...