If you are lucky enough to be where you are going to stay for the holiday, then maybe you could include some foreign destinations in your home decorations:
Germany -- Handmade wooden angels
The United States -- Nutcrackers handmade in Virginia
Zimbabwe -- hand-painted tin ornaments
If you have the travel bug, collecting ornaments that represent all the exotic places you have been helps give your tree a personal touch. They also make fun conversation pieces for your holiday parties or dinners. When I was a child, some of theornaments on our family tree I liked most were those we found while traveling. My favorite were clothes-pins painted with bathing suits and snorkeling tubes commemorating our December trip to Jamaica one year.
Travel ornaments are a great way to incorporate places you have lived in your décor. I lived in Paris for a time, as anyone who sees my tree can tell.
I know that visiting Paris is not always feasible -- not that that stops me from bringing it up weekly to my husband -- but moving within the U.S. is common. Glasses, pillows, and dish towels are all inexpensive ways to keep your prior homes and all the memories you have of them part of the present day.
Just as you can bring the places you've traveled home and keep the past part of the present, you can send your friends and family around the country ornaments specific to Washington D.C. to remind them that they are in your thoughts. The most popular is the Official White House Historical Association 201o christmas ornament. Each year the ornament represents a different presidency, and this year it is McKinley's. (Okay, he's not one of the top 10, or 20, but it's still a pretty ornament.) You might also attach a holiday D.C. notecard to a gift you send this year, or tie this Santa-and-Rudolph-on-the-Capitol ornament onto your package's ribbon.