I say hit up a army surplus and pick up an old bag.
Only problem is the black Adidas sports backpack I have only really looks good if you are about 15 (coincidentally I got it when I was 15) and the fact that it has just about fallen apart makes me look even worse. So I want to find a high quality backpack I can use on a day to day basis that doesn't look like a schoolkid gave it to me.
Any suggestions?
This guy's bags are classy, really cool, and expensive. But I am saving up all my pennies to get a bag from saddleback leather. Once you check out the site you'll be trying to hock everything you own too. Here's the link.
http://www.saddlebackleather.com/
Arcteryx make the best bags but a little pricey. I have a minor fetish with their coats(have 5).
Osprey are good too.