While going around in the internet, I saw something really cool. You know those machines that by just flicking something, it makes other stuff move, which makes other stuffs move, which makes other stuffs move… you get the point. They are called Rube Goldberg machines. I found really good ones. My favorite is this one about Japanese made one which ends in the preparations of a ramen.
Although the best one is this:
hat tip: uncertain principles