In the evening, carolers proceed to nativities that are placed among important plants including native Mexican pines and poinsettias. SO without this holiday, we wouldn't have the traditional Christmas plant.
On December 13th, in Scandinavian countries, the eldest daughter wears an Advent wreath with lit candles on her head for Saint Lucia. NOT dangerous at all.
Originating in Nepal and India, the Hindu holiday Diwali includes decorating homes with special oil lamps called "diyas" to welcome Lakshmi, the goddess of prosperity.