This would be way fun to build. The basic idea is a decorative water fountain that has the illusion of perpetual motion. A simple version could be a belt with buckets that brings water up to the top of a cascading waterfall sort of thing which at the end propels a wheel that turns the belt with buckets. Hidden in the water track somewhere would be a pump that would add water to the cascade and make the whole thing possible. But it would seem like it was just going by itself. Of course you could make super elaborate versions, junkart versions, elegant elitist versions. The possibilities are *wink* endless!
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