Reddit reviews Mokiki Ferrofluid in a Bottle Magnetic Liquid Display Stress Relief Decompression Educational Desk Toy Gift 2 Liquid Magnets

NOVELTY - Ferrofluid, a little monster in a bottle, is the astonishing liquid, which can lead you to a carefree world. But DON'T leave it on a warm environment immediately when opening it in cold winter. Heat-expansion and cold-contraction caused by large temperature difference will make it BROKEN.MANY SHAPES - You may also enjoy the fun and fascinating moments of playing and being creative which you definitely won't be able to resist. You can enjoy the fun and fascinating moments of playing and being creative which you definitely won't be able to resist. You can even make it dance... Use your imagination and create magic!STRESS RELIEF - It's an advanced toy, to help relief press for adults in the fast-tempo society.HALLOWEEN GIFT - It's a good gift for teens to do some science experienments, creative, fun but not boring as normal experiments.NOTE - We improved its packaging and some parts were updated, which makes the ferrofluid more low temperature standable. So no worries for damaged bottle and stains on the glass.