The scattered pages are from a variety of different sources. They're not going to be anything too fantastical since we wanna keep the lore-specific unlocks one per person, but assume they are innocuous things like blank paper, food wrappers (?), or single pages that you could find from books on common subjects.

As for a book of your very own...

Claude will wander the aisles of books with colorful backings and splendid lettering. Which one is he to choose? The book that looks beat-up and old seems like a good place to start. Surely that has a history to it.

Upon opening this leather-bound book, Claude will find notes written by a neat hand. They catalog food production around the kingdom on certain dates. The beginning of the notebook looks extremely dire. There is no way that the amounts here could sustain a large population. All of a sudden, as if by magic, the amounts increase exponentially. It's enough to support a kingdom and then some.

At the divide, there is a note that mentions some "trial" with "time magic" to increase crop yields. It seems as though the creator of this document would like to use this to prove that the time magic trials were successful.