You will need Two resealable plastic bags one gal.-sized and one qt.-sized 1/2 c. reduced-fat or whole milk 1 1/2 to 2 tbsp. of sugar 1/2 tsp. of vanilla extract or 1 tbsp. of cocoa powder 2 trays of ice cubes 6 tbsp. salt Waterproof winter gloves Chocolate or butterscotch chips Flavored syrups and flavoring extracts. 