We suggested a Secret Santa. We suggested it in such a way that the kids think it’s their idea.
We drew names out of a hat. No one could have their own name. They had a budget of $5 to go and buy the person a present. They’ve all had so much fun choosing a present, and wrapping it, and having a secret of who they are buying for.
It has worked well, and I suspect we’ll be doing it again in future years.