Christmas is messily materialistic. The Word became flesh. Blood, bodily fluids, wordless crying are at the heart of Christmas story. It is icky, joyful and fills the senses.
This is why with so many objects criss crossing the planet it fulfils part of the spirit of Christmas. The handling of the card, the wrapping of the gift, the prising of the plastic, the eating of food, the drinking of wine affirms our bodily humanity; for God affirms bodily humanity in its messy state by taking on a breathing, weeing, gurgling body.