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Kinetic Board Hyperbolic Toy by Otagiri

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Meet the Kinetic Board by Otagiri: a hyberbolic toy with a straight rod that goes through symmetrical holes as it moves on the base. It runs on a single battery. You can remove the board from the base to operate it manually.

Kinetic Board by Otagiri Hyperbolic Toy -- Gadgetify

This is a pretty rare toy but smaller DIY versions of it are available online.


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