What about sackcloth and ashes?

Although the modern-day idea of "wearing sackcloth" is often that of someone dressed in a burlap grain bag with head and arm holes cut in it, during Old Testament history, its appearance was quite different. Sackcloth was most often made of coarse, black goat's hair. As its name indicates, it was used for sacks, but was also customarily worn by mourners (in some countries, the ancient custom is still faintly seen today when mourners wear black arm bands at funerals), or as a sign of deep repentance and humility. Ashes were often included as a further symbol of personal sorrow. Pretty good. Jim