This semester I have been using a black messenger bag for school, I thought I would end up hating it but that is not the case. I have tried messenger bags before and hated them but they were cheaply made nylon pieces with skinny straps that dug into my shoulder. This one is different, it is the one that is used as Jack Bauer's pack in the show "24". If it's good enough for Jack, it's good enough for you.
a main pocket, 2 front pockets, 2 side pockets, and a "hidden interior pocket. I use the front pockets for small notebooks, pens, anything with a clip, headphones, and a length of 550 cord. The side pockets I use for my Surefire G2 and a Nalgene bottle. Of course I use the main pocket for books and the like as well. While it looks small in this picture I assure you it is quite large, the dimensions are 15" x 11" x 6" and it will swallow anything you want to stuff in it!
this site that sells it for $15.99 plus shipping and handling. I am not affiliated with this site, or any other site for that matter, I don't generate enough traffic in my corner of the web, which is good because I don't like traffic since it annoys me to be stuck in it.