Besides putting out a holiday spread, I also like setting up a festive table to serve everything on. I think it adds to the total ambience of the celebration and really doesn't take much time to set up.
The right lights or lighting can really add to the holiday mood you're trying to create. Here are some creative ones to consider outside of your dining room to add extra adornment around your home.
I always serve a turkey at Thanksgiving, but each year I like to try different side dishes as well as desserts. Instead of staring at a computer screen, I enjoy kicking back and going through recipe books. Here are some you might like.
If you're going to have any children in attendance, I strongly recommend having some games and activities for them. It will keep them busy and lend to their enjoyment of the day.