Have the children gather about 4-6 cups of clean, edible snow. Meanwhile in a bowl mix together about 1 cup of milk, half-and-half or cream and add to it about 1/2 cup or so sugar and about 1 teaspoon of vanilla. If you want chocolate, add about 1/4 cup cocoa and perhaps a bit more sugar. I used already mixed in the carton chocolate milk (and subtracted the sugar) this morning and it turned out fine. Mix in the snow as quickly as you can and serve.