Insta-Snow is an amazing powder that mixes with water into a white fluffy fake snow that looks just like the real thing.
Insta-snow is sodium polyacrylate, a water-absorbent polymer used in detergent and diapers. Insta-snow could be used for science lessons, especially chemistry and the chemistry of polymers. For instance, add regular table salt to see the snow "melt."
The water will evaporate within a few days, returning the insta-snow to its original powdered form which can be reused.