Perpetual Machine – It Does Exist!
Here’s how it works:

1. You do some work, earn a dollar.
2. You give the dollar to someone who performs some work for you.
3. They give the dollar to someone who does some work for them.
4. Etc.

There’s a finite number of dollars floating around, yet a virtually unlimited amount of work that is being done, merely to move the dollar back and forth.

The machine is named “economy.”

Maybe this is the inverse of a perpetual machine. Maybe not… If I can find away to keep the dollars moving without doing any work, then it would be a perpetual machine. Hmm… just in case my wish is granted, let me qualify the statement so that the dollars move towards me, rather than away from me. Well, that won’t work either, because what good are dollars if I can’t use them?