Cedric of Boccob has one.
An intelligent Boccob's Blessed Book with:
Int 19
Wis 13
Cha 15
He has the powers to allow the user to:
See invisibility at Will
Detect Magic at Will
Become invisible 3 times per day for 30 minutes
He knows Common, celestial, draconic and elven, along with telepathy and spoken language.
Furthermore, I additionally enchanted him with an Unseen servant spell on a command word.
We do research in the library together and Locheby (the name of the book) uses Unseen Servants to fetch tomes and such for him. Also to carry him around when we go places.
Cedric