I never paid attention until my daughter gave me this book for my birthday a few years ago: https://www.amazon.com/Fringe-Septembers-Notebook-Tara-Bennett/dp/1608871304/ref=mp_s_a_1_1?crid=3EHM9TD9M56QA&keywords=fringe+book&qid=1642675518&sprefix=fringe+book%2Caps%2C207&sr=8-1 Lots of fun stuff in it.
Here's another one, about the TV show Fringe.
And the Book of Cain from Diablo, which I meant to link above.
Here's another one that's awesome, I have the French version: In Search of Lost Dragons