For example make some nice photos that you could use later (or right now) to send lovely Christmas greetings to your family, friends, etc.
New app Photo Talks Christmas finds people on the photo (FRONTAL FACES) and gives them speech bubbles with text suitable for Christmas in 7 different languages: english, french, spanish, german, italian, slovene and serbian. Additionaly you can put Christmas theme mask (elf hat, Santa hat, beard, snowman,...) on the faces of people.
App on Android PIt:
Be sure to make and send many Christmas cards.