This year I plan to post one of these for each of the days of Christmas.
On Christmas Day one of the things I find invaluable is the old hostess trolley I had many years ago when I held regular dinner parties.
You do have to be a bit careful how you use these, as some things don't do well being kept warm like this but plates, sauces and covered plates of carved meat are fine. It is also useful once the meal has been served as a way of keeping second helpings warm and not taking up too much space on the table.
It can be used in the same way as a warming drawer on a range or the residual heat in the oven.