Grow your own ferrofluid Chia Pet. The Ferrofluid Bolt Kit comes with all of the components you'll need to sprout field spikes from a set of everyday fastening tools. And you won't even have to provide regular waterings or wait three weeks to see the full and grandiose effect. This black metallic grass, like all of the very best kinds of grass, provides instant gratification.
Each Ferrofluid Bolt Kit includes 50mL of ferrofluid, a specially made nut and bolt, and magnets. The spiked projection demonstration is repeatable as many times as it continues to give its audience their jollies.