Rube Goldberg Lives!
I sometimes mention the great Rube Goldberg to my classes on presentation skills when we talk about complicated explanations. The younger members usually stare at me.
Here is a household version of a Rube Goldberg device. It is beautifully done and I guarantee that you'll smile.
Watch it and then you can spend a rainy Saturday building one in your house. [My favorite part is the Slinky.]