The combonations are endless when you mix and match your snack stacks and lids! Snack stacks are a great way to keep food fresh and the extra lids are a great way to tell different snacks apart, which can save time when digging through the diaper bag. When making your own baby food you can separate each type of food and use green for green beans or peas and orange for carrots. The possibilites are endless! Helps keep different kids snacks separate.