Last month, I sewed up a flannel dress and last Saturday we finally had "fall-ish" enough weather to wear it.
I adore this pattern. It's the Tova dress from Wiksten (also available as a downloadable PDF). It's complicated enough that you feel like you're really making clothes, but easy enough to follow (especially considering this is my third time through the pattern...).
I think it will be just perfect for hosting Thanksgiving in this year. And oh man, three cheers for fall.