The librarian sent me something like 8-9 rolls of clear mylar used to
make protective book covers; the mylar is folded over a piece of thin
paper, which is glued at the folds.
My first, actually my only thought was to slip student artwork in it to
protect it when it's on display. What other uses can you geniuses think
of to do with it? There are two sizes, one about 10-12" wide and the
other bigger; the rolls seem to be many yards long. The mylar is fairly
thin.