Grow a vegetable garden on the roof of your van, while you travel
around the country.
I'd hope that people would put a camera up there, because it'd probably be entertaining to watch whenever the van got up to highway speeds.
...though probably illegal and dangerous, as it's pretty solidly a terrible idea (unless actively enclosed), but it'd _look_ neat.
(To be fair, I don't know where you'd put it after you installed lots of
solar power.)
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