Well, tomorrow is the big day. Every December 23rd there is "A Festivus for the the rest of us!" More info inside if you want to celebrate.
You see why Frank Costanza's holiday is so kick ass. According to wikipedia.com
The holiday, as portrayed in the Seinfeld episode and now celebrated by many, includes practices such as the "Airing of Grievances," which occurs during the Festivus meal and in which each person tells everyone else all the ways they have disappointed him or her over the past year. After the meal the "Feats of Strength" are performed, involving wrestling the head of the household to the floor, with the holiday ending only if the head of the household is actually pinned.
Seriously try it out this year, you might dropping Christmas all together.