This is Version 1 of an idea that I've had for a while. I like dice towers and thought that there must be a way to reload the dice automatically via levers and other mechanical means. I guess it's not incredibly practical... but it's still a neat little mechanism.
The toughest part was figuring out how to get the lever to drive the trap door at the top of the tower. The trap is necessary in order to give the landing platform enough time to get back to the bottom before the dice. It's not perfect, but it works well enough for a first version.