I don't know if it is too late, but I'm still posting Christmas/New Year mail.
Because the very day I sent the first batch, I received my first Christmas card, too. Of course... from a person I hadn't sent any card to. It doesn't matter how much you shorten your list, it always end up being longer!
I really love these 2018 Christmas stamps issued by Royal Mail:
I got two wonderful postcards from John, showing the designs of this set:
And another one from Laura!