I remember reading once on someone's blog that during Christmas she had several nativity sets around the house for her children to play with. During garage sale season, I have come across several sets that are just perfect for their little hands. Vianney played with ours all Christmas.
I hope that will be a sweet memory for them when they are older. "When I was little, I remember my mother having nativity sets all over our house that WE COULD PLAY with."