I try not to obsess about Christmas, but was contemplating this today. We have adults on Christmas Day and our grandchildren on Boxing Day who always want a roast dinner, cold turkey won't do it for them. So Christmas Day I'm thinking of maybe a boneless leg of lamb, with garlic and rosemary, pink of course, accompanied by Dauphinoise Potatoes, green beans and roasted root vegetables, plus a vegetarian meal for our non meat eating guest. When the children come to us for Boxing Day, Turkey crown, roast potatoes and all the accompaniments they like such as Yorkshire Puddings etc. That way we don't get the same meal two days running. Puddings various, children of course hate Christmas Pudding and Brussels so the few of us who like those traditional Christmas specialities will have them, I personally love Christmas Pudding, and it's only eaten once a year so I look forward to it.
My husband always cooks our Christmas morning breakfast of scrambled eggs and smoked salmon with accompanying fizz, about the only thing he cooks but he does it exceptionally well.