The broad theme of this card is "Home is wherever you find yourself." The envelopes Each one is personalized to show a bird's eye view of the recipient's neighborhood. (YOUR home.)
(The envelope concept was inspired by Rahul Mahtani & Yofred Moik's Google maps envelope,
http://googleenvelope.com/, but the idea doesn't work so well when you live on the east coast. Not to mention that it's only a
concept, not a real app. There is a real app,
http://mapenvelope.com/, that will print an envelope from a Google map for you, but I didn't want the text box and the pin in the map.)
Card frontOur older daughter is missing from this picture.
First the card opens from right to left.
She's away at college. (HER home.) To understand the joke you need to know that her initials are E.L.

Around the perimeter are the town names of everyone on our card list.
(EVERYONE'S homes.) The background map depicts the area between her college and where we live.
Next the card unfolds from bottom to top.
The "NOEL NOEL" part flips to the back so you can stand it up with the tree part on the front. (That's why the letters are wonky, so it reads the same this way, and upside down when the flap is flipped to the back.)

Our Christmas letter is on the inside of the folded up tree. I drew out the trees in CorelDraw and cut them with my Craft Robo. No way could I hand cut 100 trees with all those little scallops!
College daughter drew the portraits. The samplers on the wall reiterate the theme.
The back of the card (not shown) has our contact information and a link to our year-end slideshow.