It can be ANYTHING!
Mine is being snuggled up on the sofa, with the fire and all the tree lights on and watching a nice film.
I also love everything about Christmas Eve, all the excitement! (To me Christmas Eve is more exciting than Christmas Day)
The School Nativity plays!
And most of all, seeing my Children's faces light up when they come home to and see the house looking like Santa's Grotto. And last but not least, seeing their faces on Christmas morning!! :)