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.