Cover your work surface with newspaper. Make giant tape donuts and stick them to the newspaper. Stick down 25-30 pieces of cereal on the tape. This method is the easiest we've found to allow younger kids to paint small items effectively.
Paint the cereal white. This doesn't have to be perfect.
While the paint is still wet, sprinkle some glitter onto the pieces. Let dry.
Glue the pieces to a blue piece of construction paper to create a snow storm.