There are so, so many possible book challenges that you can suggest to patrons looking to find some great new reads in 2022. I found one comprehensive list here. Adapt them for your library and create a year-long passive program with some sort of swag to be gained by completing it.
Add links to your catalog and/or ebook collection when you post a link to the reading challenge or a PDF of your own challenge. You can use it as a weekly post to your social media or library blog. It's a good way to remind patrons of the older titles in your collection.
What I'm going to do is take a look at a few of the lists and make some suggestions for horror titles that can be used for the challenge. As a passive programming idea, you could solicit suggestions from the library staff who run any of your book clubs whether genre-based (mystery, romance, sci-fi, horror, fantasy, historical, etc.) or age based (youth, YA). Don't forget to include large print and audiobooks. Add them to a social media post, online booklist, or book display.
If your library subscribes to a service like Beanstack or ReadSquared, patrons can participate online. I would suggest making paper copies available for those who ask.
Post weekly about the challenge. Have staff post their suggestions and solicit suggestions from the public.
Even if your building is limiting access due to COVID, you can engage your patrons.
