We've had a few waifs and stays over the years, some slightly known to us admittedly.
My Dad was the worst, he was a Postman back when they delivered Christmas Day - he'd often bring someone home for a feed up and something wrapped up to take with them.
I once invited all my staff who had no one to share Christmas with, to come to us. On Christmas morning disaster struck. I woke up with ‘flu and found myself having to cook for 16 people. Even though I didn’t eat, I fed them all and they all had a lovely Christmas. :o)