Dick/Barbara
I'm pretty sure you can figure out what you shouldn't do. But as for should you could get a tree, decorate both the inside and outside, buy gifts, and the normal things like that. Maybe you and Conner can do some holiday baking aka make the kitchen a huge mess. Then I can die laughing at the disaster that comes from it.
I'm sure Lois and Clark would welcome you and you can go see them for the holidays or do something at your place, inviting them over. There are plenty of options. What were you thinking? I can say yay or nope to the idea.