I figure the most important thing to have in a library is an arrangement of bean bag chairs. Without them, one has no place to relax as they engage in their studies! I looked as hard as I could to find polystyrene beads being produced at some kind of thermoplastic polymer processing factory inside the tunnel to use as the filling for the chairs, but alas, there didn't seem to be any. The next best thing was rocks, so I suppose they'll have to do. I gathered some moss I found growing in the tunnel to serve as the outer fabric containing the rocks and made four bean bag chairs. They're surprisingly comfortable! So comfortable, in fact, that I think I might just spend the rest of the day relaxing, slouching in my comfy rock moss chairs. You all are free to come take a load off too!