This is by far the coolest and most unique desk fidget toy. This is a glass jar filled with water and liquid metal. It includes 2 magnets that you can place around the glass to attract the liquid drops. It is fun to move the magnets and watch the organic shapes. Jar is 3.5" x 2" x 1".
Powerful and Industrial metal magnet toy
Ferrofluid Display Cylinder - Art of Play
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Liquid Metal Magnet Fidget Toy - Ferrofluid - Coolest Desk Toy
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Liquid Metal Magnet Fidget Toy - Ferrofluid - Coolest Desk Toy
FerroFluid Display Toy Bottle – Ferro Fluid Liquid
Powerful and Industrial metal magnet toy
Ferrofluid in a Bottle: The amazing magnetic liquid