I agree with BARGOO and others that the actual day isn't as important as celebrating the true or original meaning of Christmas with our family and friends. I am often roped into saying a short grace at dinners now, so I made one up and memorized it: keeping it short so that I won't forget becuz of stage fright ...
My husband is Catholic and they have little games that they do with prayer time: each person says one sentence ie Thank you for the gift of bounty (food); thank you for the gift of having our family and friends with us on this day; thank you GOD for sending us the gift of your Son, Jesus; bless the cook this day ... and so forth ...
I esp love the idea of the birthday cake; some people serve Christmas cake for that very reason, and many use their own favorite cake recipes, making it as special as they can. I like spice cake with lite maple cream icing and coconut, sprinkled with walnuts or pecans; this is very popular in the states and is called the LADY BALTIMORE CAKE, I think. My mother made her own recipe for our family and used the base for a lemon loaf, and added crushed pineapple, golden raisins, and nuts (almonds and walnuts) because many in our family didn't like all the waxed candy.
THE CHRISTMAS GAME ~ A couple of years ago, at a family Christmas gathering, I made a game of a list of questions based on the story from Matthew and Luke in the bible. We would go round our guests in a circle and small cute prizes (whether gifts or gags and costing only about $1-2 each) were given to those who get them correct. I made a list of about 24 questions. This went over very well; and helped to share the true meaning of Christmas with all my family. You could read the story from the bible first, to make sure they know it. ie How many kings came and worshipped the infant Jesus? answer:3 and What does Immanuel mean? A: God with us ... and so forth ...
Like GARY says, everyone has their own traditions, you can start some new ones for your own family; we use some from our family and have added ones we prefer ourselves (it's a nice mix) ... GOD BLESS YOUR family with travel angels on the way home, and we hope that you have a wonderful 'Jesus focused' Christmas celebration upon returning as well!