The Brick Comic Network Advent contest is still running: there's fewer than 20 days left to get your entry in! There have been some great entries so far, but I'm sure you can do better, can't you?
With a grand prize of a 10216 Winter Village Bakery plus lots of other goodies, it's definitely worth entering! You can read the rules and find out how to enter over in the BCN forums. Good luck!