Looking into the various pagan holidays, Saturnalia the master serves the slave. I don't really have any slaves, and I'm not sure who my masters are. I won't get into that. Yule you eat until the log burns out. That's not going to happen. The holidays celebrate the sun, and there's usually family gathering, gift giving. I wish I wasn't in the city, there could be a big bonfire.
If I was going to do a sacrifice, maybe I could go electronics free. That's not happening this year. Maybe throw away extra clothing and books and whatnot. Usually I call family on xmas, before my conversion from a nominal Christian/atheist, to Buddhism, so I can certainly call family today.
I did find a holiday in December in Thailand, where you do Tonglen at the full moon in December. Seems most Buddhist holidays are not in December. Although there are many different celebrations around the world.
The best thing would be to connect with sangha, meditate, talk, listen and read Dharma. Perhaps do a special puja that may not be unique but dedicated to winter solstice. I could not find a winter solstice Buddhist puja.
Anyway, amongst those who have set rituals I wish you a happy holiday.