Book: Reread a favorite book by a deceased author or from a finished series, or read a book set in Mexico or a book that either has a primarily black and white cover or all the colors (ROYGBIV) on the cover, or a book featuring zombies.
I've got so many possibles for this one, since I've definitely been in a "rereading" frame of mind. But, I think I will kick off the season with one that I read every single Christmas: Hercule Poirot's Christmas. I also love to watch the adaptation, although I generally wait until closer to Christmas to do it.
I will be rereading my vintage Bantam paperback copy, which bears the title A Holiday for Murder, and originally sold for a whopping .75 back in 1973, when it was printed.