After I read through a book for each of the seasons, I did a bunch of random categories mostly based on books I already had laying around on my shelves. Categories such as birds, weather conditions and body parts. Body parts--yes body parts.
I created this category so that I could justify reading the last two Diana Gabaldon Outlander books and Bring up the bodies by Hilary Mantel. I rounded off the category by reading The Golden Calf and Fingersmith.
I was delighted to find that this category has led to a recent spate of Royal Reading. I'm glad to see it making a comeback in my reading life.