BRILLIANT IDEA: "Scholastic Forbidden Market Book Fair". In secret cooperation with school librarians, send in a few people in trench coats, sunglasses and spy hats to just "hang out" at the regular book fair, their coats loaded with banned books that kids can buy at discounted prices. Make it SO secretive and SO forbidden, it becomes something that only the COOL KIDS know about ("Cool Kid's" = "The Kids That The Librarian Feels Would Benefit From Having A Copy of Where The Sidewalk Ends").