This is a simple adaptation of the basic playdough recipe.
Sparkling Snow Playdough Recipe:
Stir together in large pan:
2 cups of flour
1 cup of salt
1 tablespoon of cream of tartar
2 tablespoons of oil
2 cups of water
Cook over medium to medium-high heat.  Cook until it sticks together (about 3 minutes).  Take it out of pan and let it cool.  Knead until smooth.   Add glitter.   I like to sprinkle several different kinds onto the table and let the children knead the glitter into the dough.
These are the glitters I used.  The winter snow in a bag is great for this!
Kneading the glitter and sparkle into the playdough.
Adult supervision is recommended if a child is using glitter because it can be harmful if swallowed.