Not having Xmas was (and is) no big deal. I had "worldly" grandparents who gave me £5 each at Xmas which would be like about £50 now I guess. But going to school afterwards evading the "what did you get?" kind of questions was difficult.
My mother actually used to get me something a few days after the 25th "in the sales" - I remember one year when I was about ten getting an Airfix kit (UK version of the type of Revell plastic models) of the Saturn V Apollo rocket that went to the moon which was all the rage in the late sixties early seventies. Another year I got a "Blue Pullman" Triang-Hornby train set.
So I just said that these presents were "for Xmas and that we got a good deal because they were cheaper after the holidays".
The defence mechanisms we learned eh?