If you decide to do a vegetarian dinner, do not just do vegetarian versions of meat dishes. There's no reason to limit yourself that way.
A meat-based Thanksgiving dinner tends to the savory. Take advantage of all the tastes available to you; have sweet dishes, sour dishes, and even mix it up. You have a lot options so there is no reason to limit yourself to just a few ideas.
Beans are your best friend. Because they can be baked, fried, and pickled, they offer a wide variety of options for the meal's proteins.
You have one major advantage over traditional meals: Pitas, tortillas, and other flatbreads allow you to provide multiple dips (such as hummus, salsas, and refried beans) and have fun. Don't just think "vegetarian burrito bar" and you should be fine.
Your biggest limitation will be the lack of dairy products and eggs. Stick to stews, salads, and breads, and you should be fine.
A meat-based Thanksgiving dinner tends to the savory. Take advantage of all the tastes available to you; have sweet dishes, sour dishes, and even mix it up. You have a lot options so there is no reason to limit yourself to just a few ideas.
Beans are your best friend. Because they can be baked, fried, and pickled, they offer a wide variety of options for the meal's proteins.
You have one major advantage over traditional meals: Pitas, tortillas, and other flatbreads allow you to provide multiple dips (such as hummus, salsas, and refried beans) and have fun. Don't just think "vegetarian burrito bar" and you should be fine.
Your biggest limitation will be the lack of dairy products and eggs. Stick to stews, salads, and breads, and you should be fine.