'Tis the season of goodwill and cheer, and a chance to share greetings and thoughts with others; so why not share it with CCP too?
For the past 2 years, Mike Azariah has been encouraging players from all over to share a little festive greeting with the people who make the game on which our community has grown. The same call has gone out again this year, along with everything you need to know to be part of Operation Northern Troll:

The concept is simple.  I want you (yes, YOU) to send a Christmas card to CCP.  Not a digital thing but an honest paper and stamp card.  I push it early because we are talking international mail and its speeds.

Full details and the mailing addresses for the CCP offices can be found here on Mike's blog. As a little help, I've sourced some guideline information on postal deadlines for those keen to take part.
Sending from the UK (similar dates for Europe): December 16th for International Standard (Airmail) - (full options here)
Sending from the US: December 8th for first class international (full options here)
Sending from Australia: ASAP! Economy Air may still make it before the 25th (full details here)
(Apologies to other regions, reliable information was hard to find!)
It's a small and simple gesture, but even those can bring a little bit of holiday warmth to the frozen north.