G.P.
My sister has a friend that made a book out of them. I am not quite sure how she put it together, but she had all of the kids artwork and good schoolwork together in a book. I think my sister said she got a binder with the clear plastic pocket type pages that go into binders and just folded up their artork and put them in the pockets. I know she has one for each school year.
I personally have saved my daughter's for awhile and then I go through them awhile later and keep only the ones that really make me smile. I know how hard it is at that age to throw things away - but when it really starts to pile up - - - you get practical. If I didn't throw ANYTHING away - I would have an entire room dedicated to storing her artwork.