If you have time to spare in the next couple of weeks, you might be able to contribute in one of the upcoming bug hunts. They’re an important step in the WordPress release cycle, where a final push is made to identify and resolve some final bugs before the next version of WordPress is unleashes on the world.
There’s more information down on the WordPress blog and if you can help, it’s a better way to thank your fellow WordPress users than sending christmas cards to everyone you know.
Who would have known that a bug hunt could be so much fun!