Some hyper-cool ball toys for your Christmas morning. Submitter Chris Glick in Japan explains:
"There's a Japanese kids' show called 'Pythagoras Switch,' which usually ends/ended with a Rube Goldberg device that concludes with the show's name. Nearly every device contains marbles or balls in motion as a step. The following video is about 10 minutes' worth of largely ball-heavy Rube Goldberg machines. There is no AC/DC soundtrack, however."