Not sure if this is something that everyone is interested in or not. I would like to start a thread with an ongoing list of commemorative/event postmarks that are available and where they can be acquired.
Here is the only one I know of right now:
Santa Claus Station
Santa Claus, IN 47579-9998
This will be available on working days between Dec. 1 & 24.
Hopefully this thread will take off and become a bevy of info.