OK adding this to the list of things to build
A sand/zen garden. This looks easier to make than a CNC since its only two axis and a big magnet. Making the “sandbox” maybe more of a challenge. And as the article says, its been done other times too (I like one of the previous examples where the system “cleans” the slate”).
Zen and the Art of Arduino
CNC Zen Garden
CNC zen gardening
Zen rock garden table uses magnets and sand
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