I have a nice manger that I got when first married 23 years ago. Fontanini pieces, I got a few each year til I had enough. Yeah I was still a believer then. Anyway, I still set it out, because it's so pretty, and it's a nice story.
But my kids (DS is atheist, DD is agnostic) like to put the sheep on top of the manger, and hide the baby.
And this year I found a pink hot wheels hummer in one of the boxes I was moving around, and set it up at the foot of the manger near the wise men and shepherds (who are all way bigger than it) to see how long it would be before someone noticed. I said it was Baby Jesus' limo.