In Eastern, on Saturday after Good Friday we have habit in some parts of the country to light up bonfire to save us from trolls and witches. When God's protecting power has been at lowest Him sleeping in the cave. The more sparks and smoke the better. Witches can't get trough spark-rain. My family is from that area where the habit is strongest, but in city environment one has to improvise. And try to avoid spark and smoke. But I believe this will do.