Freeze your child's drink box or as an icepack and is thawed by lunchtime.

I love this idea because it works for different situations, works great for school lunches, freeze your child's drink boxes or pouches and then when you pack it in their lunch it keeps the other items cool and it's thawed out just in time for lunch. No need to use icepacks, if you are going on a picnic or hike or even just an outing, the frozen pouches keep your other items cool and you don't have the added weight of ice packs or the mess of melted ice. I also freeze the tubes of yogurt, keeps the yogurt cool and by lunchtime it's melted.