I think I'm going to break down and buy some of the book baskets from reallygoodstuff.com. My classroom has some library books in HORRIBLE disarray. The dollar stores by me don't really have any baskets, and the ones that do are oddly shaped (circular!) and flimsy. Has anyone purchased these? I teach first so I'm assuming I'll need mostly the larger baskets (the medium ones, 4 in a set) for the picture books), but maybe the small ones would be good for some of the higher level books that are smaller? Are they worth the investment? I've seen people using Sterlite containers but those don't seem all that different price-wise.