In most Mexican homes the principal adornment for the holidays is "El Nacimiento" or the nativity scene. The scene includes: a created stable with clay or plaster figurines representing the Holy Family. It is typically on display either inside or outside for everyone to see.
In addition to Mary, Joseph and Jesus, the scene may also include an angel. Some families include the details of the Three Wise Men, livestock, shepherds and their flock, and some include forces of evil represented by a serpent and a grotesque Lucifer lurking in the shadows. Presently, some nativities incorporate a Christmas tree. More than likely the tree would be artificial because a natural pine would be a luxury to most families in Mexico.