I'm not sure if this is too late, but I thought I'd add it.
If you have a couple extra rolls of wrapping paper around, you could play a game like the toilet paper mummy game that they do at halloween partys. We did this at my color guard christmas party a couple weeks ago. There were 10 15 to 16 year olds and we all had a ball! We divided up into 2 teams and each team wrapped 3 people together as one present. We wrapped them up and tied a ribbon around them and put a bow on top. It was soo much fun. And the pictures are hilarious. If I remember tomorrow, I will post them. The team that finishes wrapping first wins.