Ferrofluid Display Kit with 2 Neodymium Magnets

a tiny, theatrical demo of magnetic flux: sealed 2ml ferrofluid plus two neodymium magnets for mesmerizing, spike-filled shapes.

watch a dark, inky blob turn into spiky sculptures when magnets come near. this kit comes with sealed 2ml ferrofluid and two neodymium magnets, so you can make miniature magnetic landscapes on your desk. weird, calming, and oddly showy — a pocket-sized science trick that looks like liquid sculpture.