Make DIY snow paints
Fill either spray bottles or squirt bottles (or a combination of both) with water and add a few drops of food coloring to each. Take the spray paints outside and create artwork in the snow. Kids can splatter as much of the dye as they’d like, while parents can rest assured it will all be melted away by next week. (Have a little one who’s already taken her outdoor art projects inside? This is how to get crayon marks off walls.)
Blow a frozen bubble
If it’s cold enough (and your kids have ample amounts of patience), you might be able to blow a few frozen bubbles. Create a soapy formula—a mixture of water and baby shampoo or dish soap should do the trick—and take it outside. Dip your bubble wand into the mixture and blow a bubble slow enough that it stays on the wand. The bubble should freeze over into an orb-like ball before it pops.