There are plenty of holiday books that incorporate snow. From The Snowman to The Christmas Miracle, snow is a fun part of the holiday season, even if you live someplace warm. Along with reading one of your favorite holiday books, why not make your own play snow? Only two ingredients, and your kids will be in for hours of fun.
I love at home craft projects-- you know they're not made out of toxins, and you can have fun making your supplies as well as the craft!...these would be great sold as a set in a tool box like container along with a small roll of freezer paper.