This is one of those seemingly throw-away things you do that your kids will remember their whole lives:
Snow Ice Cream
Put out a big clean bowl when the snow starts and collect a mass of snow about the size of a gallon milk jug. (You can scoop it up, too, but be absolutely sure it's clean and hasn't been walked on/ exposed to car exhaust/ peed on by squirrels.) Bring it inside.
Add, stirring gently:
1 cup white sugar
1 ½ tablespoons vanilla
Add more sugar and vanilla to taste, then slowly stir in as much of:
2 cups milk
as it takes to give you the ice-creamy consistency you want. Divvy it amongst the kids (not forgetting yourself) and eat immediately!
Your kids will never again look at snowdrifts in the same way!