Most of time, we think that symbols of Christmas for greeting cards are snow man, santa, gift box, shoes, bells....
Infact, there are many other story which we can talk about Christmas. Some funny story about baby boy and baby girl in christmas season, some story about jesu, or just few simple message to your friend, your family.... can become good christmas symbols.
Now day, christmas season is not only for western people, but also for asian and african. Maybe some symbol will change from Santa, snowman to dragon, tiger as asian christmas symbol.... maybe in the future... I hope so...