1. Skip the ice pack and create your own using a water soaked, frozen sponge enclosed in a plastic back.
Source: http://kidsactivitiesblog.com/54365/lunch-box-tips |
Source: http://www.danamadeit.com/2012/06/tutorial-fridge-magnet-cups.html |
Source: http://www.sohosonnet.com/crafts-and-diy/cereal-box-upcycled-into-a-magnetic-paper-bin/ |