- Elf Yourself. From the clever folks at JibJab, with underwriting by OfficeMax to keep it free, elfyourself.com is a fun, and surprisingly easy (they've really improved the interface from last year) way to send funny holiday emails to your friends and family.
- Chin Carolers. They don't sing the entire song, unfortunately, but they do know the refrain from an awful lot of holiday tunes. (Hat Tip: Lois Duckey)
- Tracking Santa Claus. NORAD tracks Mr. C's progress around the world.
- Design Your Own Gingerbread House. Pretty intuitive and inventive. Allows for truly artistic creations, or just plain silly stuff, like adding a fish to your gingerbread house.
- Christmas eCards. A variety of cards are available: some funny, some religious, some animated. 123greetings also has non-Holiday cards-- all for free.
- Christmas Screensavers. If you want to make your computer more festive, this is a good website for you.
Most of these sites have advertising of some sort or other, which is why they are free, but the intrusion level isn't too bad. Have fun!