Our inner librarian cringed a bit at this, but we're picturing a book headboard like this made with illustrated covers of children's books in the room of a young book lover. But we suppose you're not desecrating books if you use ones that are on their last limbs like those with torn or missing pages. In the project above almost thirty books were used so you may have to hunt for awhile at garage sales to get an ample supply. If the headboard is for a twin bed then obviously you would need fewer.
You can find instructions for this project, appropriately, at Instructables.