Ferrofluid 900uL General Purpose for 4" Diameter V.C.

Ferrofluid 900uL General Purpose for 4" Diameter V.C.

FerroFluid Display Toy Bottle – Dancing Magnetic Fluid STEM Toy – Interactive Liquid Metal Desk Toy with Neodymium Magnets – Educational Science Kit for Kids & Adults

SPACECARE Magnetic Sand Iron Filings Iron Powder Filings Magnetic Power for Magnet Education and School Projects, Storage (12 Ounces) with Shaker Lid, 1 Pack Iron Oxide Powder Shavings for Science