Sure, it's far better to travel by train than car or plane for the holiday, and cooking with local, in season vegetables is ideal, but I trust that the flood of articles on the interweb about hosting an environmentally friendly feast have already told you that stuff. What I'm saying - or rather what I am just saying - is that Thanksgiving shouldn't be about overeating birds stuffed with other birds stuffed with pigs or pumpkins or whatever goes into those. It's about gratitude. Be considerate of what you are eating, think for a moment about where it came from, the efforts that went into growing and preparing the ingredients for each dish, the many moving parts in this country that made such a meal possible for you and yours and give thanks.
That's it. Just mindful and grateful. Enjoy the fruits of your labor and the delicious, peaceful fullfillment that comes along with a home-cooked meal.