In some markets, UK, Germany and a few other europeans so far, it’s possible to buy the Advent Calendar, containing 23 capsules and one “surprise”. Surprise is probably going to be a small glass or one of the small Nespresso accessories. Priced at 29€/25£ it is on the expensive side. No news if it will be available for the US market too (in the previous years it wasn’t).
Nespresso Advent Calendar available