My first accessory-brand loyalty was definitely brought on by Jansport. I insisted on all my backpacks being Jansport; they were the middle-school gold standard!
I hadn't thought about the brand until the other day, when I discovered that it was making laptop sleeves.
The prints don't all say homeroom, either; pick from zebra, pink plaid, guerrilla graffiti (which I'm strangely drawn to), a mod pink and brown print, or plain black. The handle on top means you don't need to toss it in a bag, and the sleeves also come with Jansport's legendary lifetime warranty!