This is not my own recipe obviously, but I lost mine...I think this is pretty close to the way I've done it before. It is for oyster-cornbread stuffing.
There are so many things you can do with mashed potatoes - cream cheese, chives, add cheese and bake for a short time after mashing...but I would probably offer plain as well for the purists. I once had lobster mashed potatoes at an all-appetizer restaurant in Charleston - to die for.
Acorn squash baked with apples and honey in the hollow of the squash is easy, pretty, and yummery, though I actually prefer Hubbard which has been mashed and then stirred with lots of butter, salt and pepper.
My folks have the Tassajara (sp?) Cookbook (not the Bread Book), which has a divine recipe for a currried pumpkin-mushroom soup. Super-easy - I made it all the time as a teenager.
Hope you have a great holiday! Let us know afterward.