Answer to my challenge: To start, let's make it a Christmas fic.
Since everyone enjoys writing about food, it has to involve Christmas dinner... BUT it has to be an *unusual* Christmas dinner. No turkey and stuffing, no ham and pineapple. Something different that someone decides to cook for dinner for the holiday, and the team's reaction to this unusual feast.
We need to have presents... someone gets a present they hate. But the giver obviously misread something and thinks the recipient will love it. How does the recipient handle this?
And to make it a real challenge... how about we stick to gen?
Spoilers: Ascension I believe. Not a major one though.
This one looks like a good bet. Found on the Ashton site, the page was full of Holiday fic from a wide variety of fic writers. Lots of holiday inspired cartoons by Leah Rosenthal at the top of the page, too, to put you in the mood. Here's the link to the page I found the fic on: http://xmas.ashtonpress.net/stargate.ht