For the spankee in your life a special advent calendar is the ticket to some holiday fun. Instead of chocolate or a picture behind each window put an implement or other item for spanking pleasure. There are spanking dice or cards or special aftercare items. Since the windows can be small a picture or description can be placed behind each window. Cloth ones can be continually reused and for that matter could be used for any month :)
You could even have a good spankee calendar and a naughty spankee calendar, depending on their behavior. The naughty one has all the implements, punishments. The good spankee calendar would have the implements the spankee likes and other special treats like bottom rubs.