Thirty types of often magical ink that may be found in books or scrolls or occasionally just scrawled on a wall, with all kinds of uses.
An enchanted spell book in a walking stick, originally created by a blind mage. It allows a wizard to secretly prepare spells in plain sight.
A sinister book that forces the reader to relive painful memories by presenting idealized versions of their outcomes.
"Seriously, how many books does he have?"
Thirty books, some the kind you could pick up in your local library, others that are carefully hidden away from the general public for good reasons.
The 'pornography' of the lower classes in Refuge Beneath The Waves
Expertise on a tab? Of course! Sign me up!
Within the pages of this ancient and dusty tomb are the blueprints of the mad creations of a powerful Lich.
A miserable little pile of secrets? No, where did you get that idea? Join the scholar Matteus Carter as he unveils the secrets of an ancient dwarven poem.
Six white tomes, Encased in bone.
They shine in light like polished stone.
Trapped deep inside, fel beasts reside.
Dark power; to the holder, the books provide.
In lakes, submersed, and tombs accursed.
Across the land they are disbursed.
The greatest failure of the Arch Mage Calypso is his one legacy sought by Emporers, Dragons, and Gods.
The cover depicts a stylized rose with one drop of blood dripping from one of its thorns.
(But is there more than meets the eye with this book, of bloody course there is!)
After the sorceress Rigalene died, those going through her estate were puzzled. Where were all her books? And how would they find homes for all these cats?
30 books to be found within a steampunk setting. Manuals, tomes, and blueprints galore!
Illusion is the disguise of emptiness
The Elders say there was once a great kingdom here. Yes, in this field of cattle, void of rubble or debris. Now, there are just a few fences and a barn for the bovine herd. At the most, you'll find some fresh dung. No treasures or artifacts of bygone ages here. What fate could have befallen such a place, as to leave no trace? Come closer, and I will show you...
A not-so-subtle means to send PCs on adventures.
Treasured texts of the infamous Doctor Alcomb.
If you know books, you know what they can do with you.
A young scholar and mage creates a book to hold all the knowlage he discoverd without haveing to carry a library or destroy what he wrote.
Perhaps those that practice elemental magic begin to take on characteristics associated with their chosen element. For instance, an earth elementalist might be prone to agoraphobia, while air and possibly fire elementalists might have problems with claustrophobia. Water elementalists might always seek the path of least resistance. A fire elementalist might have a cat's opinion of water. This could also apply to physical differences. Fire elementalists might have a freakishly high metabolism and a permanently high body temperature. Water elementalists would probably never get dehydrated, but might slow down a lot when it's cold. Etc, etc.