Enjoy some Ben and Jerry's Festivus flavour ice cream.
Or think of others by donating to the Human Fund.
Another way of thinking of others is Airing your Grievances.
Here's someone grievances from the festivus book site:
"To my stupid in-laws who all insist on giving each other gift cards of the same f-ing denomination! Wow nothing says I care like a creative gift card. Guess what guys its a wash! You are all giving each other $25! Stay home and leave me alone this year, f-ing idiots."
Until next year...