I love nativity sets of all kinds, and I enjoyed peeking at those of the Copper's Wife. If you've posted photos of your family's creche, leave me the link in the comments below. Below is our children's nativity. I bought it for $5 at Dillard's after-Christmas sale. It's unbreakable resin plated in silver--just as child-friendly as a plastic version, but the silver goes with the holiday decorations better than plastic. This is the first year we used an "adult" nativity; to keep kids from breaking it, I adhered the ceramic figurines to the base with putty.
PS--If you are ever in Nashville in wintertime, stop by the Upper Room near Vanderbilt for an amazing collection of nativities from around the world!