Watch A Tiny Rube Goldberg Machine That Makes Postcards

Rube Goldberg Machines complete a simple task in the most inefficient way possible. They tend to be sprawling contraptions that can take days to set up for a single “run.” Not so with Melvin, the world’s smallest Rube Goldberg machine, who is currently traveling the world in a suitcase.

Melvin is smart: he geo-locates himself using GPS, documents his audience with his built-in smartphone camera, and talks about his “runs” on Facebook and Twitter. After each successful run, he spits out a stamped postcard that reads “wish you were here.”

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