You might have guessed that this subject is dear to my heart.
As a toy theater lover since childhood, I've found its architectural elements (proscenia especially) eminently suited to become a showcase for a tableau of the Nativity.
Crechemania Creches are inspired and adapted from the toy theater tradition. There's fine work being done along these lines by the gifted artist Harry Oudekerk. (His Magazine of Paper Theatricals offers his work to download and to build.)
I hope Harry, and you, will try your hand at developing your own creches. We can't wait to see them!