Easy, Cheap Ideas For Back-To-School

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

2. Organize your locker by adding magnets to the back of cups -- and attach it to the inside of your locker for a way to hold your supplies.

Source: http://www.danamadeit.com/2012/06/tutorial-fridge-magnet-cups.html

3. Cereal folders: 

Source: http://www.sohosonnet.com/crafts-and-diy/cereal-box-upcycled-into-a-magnetic-paper-bin/