So we have a book called Adventures in Cartooning, which you can see because it has a cover, displayed above. And the point of it, and its sequel Adventures in Cartooning Activity Book, is that they show you how to make comics. And then they do! So that's pretty awesome, and also: truth in advertising.
Our adventuring authors, being extremely considerate fellows, have just sent me a cool thing that will be useful if you are a librarian. They noticed that their books are somewhat heavy on the 'encouraging folks to draw' and if people choose to draw in the books, it turns out that doesn't work so well for the multiple-users of library copies.
The solution? Bookplates!
Useful and cute! It doesn't get much better than that.