On Amazon right now you can get these handy Fit & Fresh Cool Coolers Slim Lunch Ice Packs, Multicolored – Set of 4 for just $7.99. I think these are the perfect shape and size for packing school lunches!
This is part of Amazon’s Add-On Program and will ship free with a qualifying purchase.
Note: Amazon prices and promotions can change at any time. The price(s) listed in this post is/are subject to change.