I asked my parents if I could have it to re-live childhood Christmases with DC and turns out they have thrown it out - I am devastated! I think it would have been bought in the early 1990s, though it could have been late 1980s.
It came in a long, flat cardboard box - which might have been red and blue. It contained various Christmas crafts, games and activities, all made out of cardboard. There was a flat cardboard nativity set where you folded the stable, manger, figures etc. and used cardboard "tabs" to make them into 3D figures. There was also a cardboard board game which I think featured trying to get Santa back to the North Pole where there was some food waiting for him. There was also a book of mostly Christmas-themed puzzles, though the only one I remember featured a shepherd trying to get a wolf, a sheep and a bale of hay over the river in a boat where only one of them could ride in it at once.
I've tried googling and looking on eBay, but nothing. Does this ring any bells for anyone?? It would make my Christmas if I could buy another one second hand to do with DC. Massively long shot I know, but I've seen MN work miracles with this sort of stuff before!