The most successful displays I've done at my library have been passive readers advisory. For the last five years or so, I’ve done a monthly display of minature books based on the top YA titles checked out in my library system, with the top 10 books getting four readalikes.
The Tiny Library is a collection of tiny books based on our most popular titles. Each tiny book contains reading suggestions based on our readalike list. There is a QR code that leads to a Google Form where teens can choose the books they want to pick up from the library. When they pick up their book, they also get their own Mini Book Craft Kit to make their own tiny library at home.
Before Tiny Library, patrons would learn that the book they wanted (usually a very popular title) was checked out and leave empty-handed. The Tiny Library recommends new titles and keeps patrons reading!
The Tiny Library is a passive program, display, virtual readers advisory, and craft all mixed together.