Other than logging in to the forum, I don't do much really. That being said, I was planning to see the market and sell some of my alts a few days before Christmas but decided to postpone it because I feel like we'll see more movement after the new year. I don't know if I'll regret that but it helps that I took some profits before that already.
That being said, I don't think I've ever done anything special on Christmas or other holidays in the past years, so I never planned anything special for such occasions. If anything someone would say that a big holiday is a time to sell some of your assets, especially if you're doing daily trading.