No really a tradition, but something worth to me.
Each time the 25th me and my sister get off the beds, we were filmed as going towards the main floor and the Christmas Tree. I've the collection of me from really early till now (and still doing this) and weirdly it has some nice feeling.

Aside that, I love to play table games and board games during Christmas or just spent times with the people that matter the most in my life, given that I'm living the college student abroad life.