I use those big bags when taking classes in Houston - In the upper right corner I write the day and time of the class, then the class name and the name of the instructor. On the left side I make a list of all the supplies I need for that particular class. Each evening I "pack" my bag for the next days class. Then I know I have everything I need. The classes are listed on a master schedule at the GB Center by number so you know what room to go to. I make a bag like this for each class I'm taking - then everything is completely self contained in the bag and I don't forget anything I need.