A library decided to promote banned books week by putting black covers on their banned books with a 1-4 word description about why the book was banned. Such as “Anti-White”, “Smut”, “Filthy” etc. There are clues that help lead you to the books, and the scavenger hunt has been more popular than expected.
As was pointed out if you see a book cover that has “Smut” on the front you are almost compelled to pick it up.
This is a great way to generate interest in banned books. Taking the concept of brown paper wrappers, which has been done in the past, and taking it one step further. By flaunting why these books were ‘banned’ in some libraries it allows attention to be drawn while letting patrons decide for themselves if the reasoning is even tangentially valid.