Because clearly I don't have enough to do already. : )
The Web Comic Secret Santa Exchange, which was until recently ran by Sheryl Schopfer of Deer Me (Go check it out!), is exactly what it sounds like, a Secret Santa for webcomic creators. Your name goes in two hats (don't worry I have plenty of hats to choose from) and every creator gets assigned a random comic to produce a Christmas present for.
You're eligible to join up if you have an active webcomic with 20 or more pages in the archive by the time sign ups start next month. If you don't then you can still help out if you like by becoming a safety net elf. What that means is that whilst you won't receive anything you can act as a stand in and jump to the rescue if a participant fails to deliver, because you're such a nice person.
Anyway, you can read more about it here.
Go read more about it.