In Stockholm I once went to a place where the urinal was the wall type, and at viewing height there was this big Rube Goldberg-esque contraption behind a pane o

In Stockholm I once went to a place where the urinal was the wall type, and at viewing height there was this big Rube Goldberg-esque contraption behind a pane of glass. As you relieved yourself you "charged" this machine somehow, and pinballs would roll through the machine. It was all pretty odd.