We don't have that many things have become traditional in our High School Ministry. The way we work is that we want to make sure God is calling us to do it; if it works well then we do it again, if it is not impactfull then we cancel it! About four years ago we had a leader who said something to the effect: "Lets do a cheesy Christmas sweater party this year Neal." I have to admit that I was hesitant, at first, but God has used this event to grab students hearts and change lives.
This year we are doing it again and Adena Rossiter (she runs our SL program) made this video with our SL's. I love it!