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submitted 3 months ago by dantheclamman@lemmy.world to c/offbeat@lemmy.ca
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[-] Nindelofocho@lemmy.world 3 points 3 months ago

A handful of small metal balls inside it and a magnet at its holding spot is all it would need id imagine

[-] TheOakTree@lemmy.zip 1 points 3 months ago* (last edited 3 months ago)

I was thinking this too. Four captive rollers in a magnetic frame on the inside of the ball, and a moving electromagnet below the floor to guide it.

this post was submitted on 01 Jan 2026
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