POOF-SLINKY-Slippery Slimes Kit. Make two kinds of gloppy, slippery slimes right at home! Learn about the science of slime with this Slippery Slime activity kit. With this kit you have everything you need to make Sewer Slime, and Flip Flop slime. This kit contains one package of cornstarch, one package of guar gum, one package of borax, one measuring spoon, and instructions. Recommended for ages 8 and up. WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 years. Made in USA and Imported.