One of my many quests this summer was to find the perfect book bag for Read to Self during Reader's Workshop. Thanks to the help of a colleague on Proteacher, I came upon black bags at this site. They were affordable and a good size for our books in class. My students keep about 8 books in their book bags after each book selection. These bags have worked well for both picture books and chapter books.
To hang the bags, I used these hooks and they held up well initially. That is, until the two weeks of insane humidity we had in early September. Once that weather was over however, I was able to hang up more hooks and they have lasted nicely so far. They are strong enough for us to hang multiple bags, in fact.
We also keep our headphones for Listen to Reading in these bags. I found if the students hook the headphones on the bag as shown in this picture, with the wire inside, they will stay in good shape.
The name tags are canvas keychains that I painted with fabric paint over vacation. I write the students' names with Sharpie.