Yes, I know it's still July, but I can't be the only person who has seen the plethora of school supplies marching back into the stores.
Target is my favorite cheapie place to hit up for all sorts of things, but their school supply section is fun to walk through (and score a few items for the office!). I've noticed this year that backpacks have made some big advancements from the design of them through to function (rolling backpacks, I would have loved one of those!). Here's a few I saw on the Target site:
Hello Kitty, more like, 'Hello School!'.

Punk rocker chic, why yes, I'd like to store my math books in that.

I imagine that I could make this bag go as fast as it looks.