My family also has the "one on Christmas Eve, the rest on Christmas morning" tradition.
Always get a live tree about one or two weeks before. Dad always puts the lights up outside the first week of December. I do lots of baking for gift baskets/plates. I always bring change with me whenever I go out to put in the Salvation Army kettles (in fact, I save change throughout the year for this so there's a few dollars' worth of change going into a single kettle). I look for the Perfect Ornament (flamingo wearing a Santa hat) but I never find it. Walk the neighborhood to look at the lights. Certain dishes always made for Christmas dinner.