My family's traditions are pretty typical I think, but my mother is a very creative cook and liked to change it up every year. Actually, maybe not so typical, since my parents are vegetarians. (I'm not, but I was as kid) So my mother always played around with different vegetarian main dishes, trying to approximate the impact of a whole, roasted turkey. One time she used a giant hubbard squash- a big, lumpy gray thing, about 18 inches long! The stuffing was great, but the squash itself was kind of nasty. I don't think anyone ate much of it. I suspect a "Hubbard squash" might be a variety of decorative gourd.
These days, we usually do Thanksgiving at my sister's house. Her husband is a Minnesota Lutheran (we're Eastern European Jews with roots in Boston and Chicago) and we have adopted some of his family's traditions. This year we're eating at 2pm (we never ate before 5pm in our family) and we have adopted the green bean/mushroom casserole. I have been the one to make it the last few years, but I refuse to use mushroom soup. I make a fancier version with a homemade mushroom cream sauce, but my brother in law and his parents love it. My sister has learned to make a turkey and she always knocks it out of the park.
I have a new set of in-laws via my youngest sister, and they are Venezuelan... So I'm really looking forward to seeing what our holiday traditions look like in ten years. (Yes, I know Thanksgiving is only a US holiday)
To me, this is what Thanksgiving is about. Where ever you stand politically, I think we should all take the time to appreciate that, all things considered, we are fortunate to be living here in America.