Creative Holiday Party Ideas?

Friends, I need your creative juices!

We are putting on a holiday party for our complex and we want to do something different. I know after the holidays, we are so sick of all the Christmas parties.

So what are some things you really look forward to at Christmas parties each year?
What are things you never want to see again?
What are so really fun unique things you've heard of or seen?

Thanks for your help!