Before mixing the ingredients together, invite your child to explore the cornstarch and the dish soap separately with their hands.Objects for play: Plastic toys with patterns and textures plastic cups toy dolls and animals to make footprints strawberry baskets child-safe plastic/metal kitchen utensils colander etc.Tray, plate, baking sheet, or plastic placemat to contain slime during play.⅓ cup liquid dish soap (in a liquid measuring cup).