While it pains me to see books not being read, these are some cute ideas that I could see doing if a book isn't readable any more.
Create Book Shelves, Literally Here's a clever new use for old books: Make your own shelves in three simple steps. From Spare Books to Beautiful Shelves. Put your books to work on your walls as shelves. Hang them in multiples to build a unique showcase for your lightweight whimsical collectibles.