Post the best Rube Goldberg machines in this thread.

A Rube Goldberg machine is basically one large chain reaction, which serves as an overly complicated solution to a simple task.

I'll start.

Click here.

What are you doing? That link is safe.
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The is one that uses a lot of the parts of a Honda Accord (if not all of them). The balancing involved is phenomenal. I don't have a link, but you can probably find it. It's the best one I've seen by far.