‘Twas a time when advent calendars were simply an exercise in counting down the days until the most wonderful time of the year, celebrating each one closer with a wholesome festive image. No longer. Advent calendars have recently surged in popularity, with everyone from beauty brands to pet food companies creating 24-day collections of surprises. Whether it’s a crafty calendar or one filled with delicious treats behind each door, these advent calendars offer delights for every day of December.