I finished making a Rube Goldberg machine yesterday, and filmed it from start to finish. I thought that you might enjoy watching it. It never worked as an entire, functioning machine, but that was only because  I didn’t have enough stuff to do it all in one big, continuous machine. (And patience to retake the entire thing over and over and over again!) “Theoretically” it would have worked! (Although it took 5 hours to build a machine that could do what  I could do myself in 15 seconds!)