Below are some great book that infuse Augmented Reality into them that would be good for your library:
Overdrive has created some seasonal promotional materials for libraries. The kits contain customizable print ready templates and web graphics, etc. I'm not 100% sold on promoting 'Overdrive'--I think we need to promote our library brand, not a vendor we pay.
This kickstarter project takes reading to the next level by incorporating traditiona role playing game elements (leveling, point distribution) into the reading experience.