There was an earlier example of an educational 3D augmented reality book with dinosaur. Similar research has been carried out in the VTT in Otaniemi, Espoo. Here is a demo video:
It looks that there is a startup, too. Here:
I am not sure what would be the add-value of having augmented 3D books in the library, but maybe we could consider some adaptation of this idea. Having some smart tags (QR-codes, tags) one may point with a mobile phone to bring to the big screen a “virtual” character telling stories, listing stories, providing guidance, etc.