Christmas really only became a festival where children were included during the Victorian era. Before that, in Georgian days and earlier, it was very much a celebration for adults. I think especially the 26p card illustrates the fantasy side of Christmas for children. These are the only two of this 1987 issue which I have. The full set includes a snowman looking through the window and a child reading with the characters coming to life.
This is a post for Sunday Stamps, now hosted by Violet Sky at "See it on a Postcard!"