I am very traditional when it comes to Thanksgiving dishes. There have been some good ideas already listed. My thought is the traditional green been casserole but prepared in a crockpot. That way, staying hot won't be a problem (yes, I agree, that can definitely an issue with holiday meals). Personally, I use canned French cut green beans, a can of cream of mushroom soup (can dilute with broth if you like), then top with the crispy French fried onion rings just before serving.