GREAT idea for school lunches -- make smoothies, freeze them, then put them in their lunchboxes frozen (they will thaw before lunch plus act as a cold pack for other things). My kids love smoothies so this totally works.
This really is the Ultimate List of Lunch Box Ideas! I love how it's broken down into categories and easy to read. Such a handy tool for packing school lunches!Kid Lunch Ideas for school, School Lunches