A while back I did a post on some clever uses for old books. Since I’ve run into a few more, I thought I’d update the list.
Kathy Kelly, an Erie law librarian, has developed a business called BookBags in which she makes purses and laptop computer cases from the covers of outdated law books and other volumes. The bags will be on display in the Fayette County Law Library beginning next month. 
This Into That artist, Jim Rosenau makes some really neat arts from vintage books, including book cases, book shelves, chairs, etc.
How to Make a Hollow Book (from wikiHow):A hollow book can be a nifty way to hide something, whether it’s a spare key, a secret note, or even money. Most people wouldn’t think to browse your library for private or personal things. It’s also a great way to pass something to someone discreetly–an unsuspecting onlooker will just think you’re sharing a very good read!
How to Turn a Book Into a Picture Frame (from wikiHow): Search the basement, the attic or the back of the bookshelves for an old book that has not been opened for years. Make sure that it isn’t a valuable antique or first edition! Follow the steps to insert a favorite picture into the frame. Place the book on the end table to be enjoyed and shared by everyone.
Instructables also has a video tutorial on how to make this cool Recycled Book Lampshade.
How to Make and Do has some other fun ideas, including a literary clock, stacked book table legs, and personalized flap books.
Don’t have the right books for these projects? Then stop by the Friends of the UW Madison Libraries used book sale on April 7-10, 2010. Held at the Memorial Library at the University of Wisconsin-Madison, this is the largest used book sale in Wisconsin and includes more than 15,000 books covering almost any subject.