Entertain the idea of a new temperature unit suitable for those folks with strong belief in the literal interpration of what's written in the bible.
Set zero to the freezing point of water and 666 °h (degrees hell) to the melting point of brimstone.
Typical human body temperature is 37 °C. The melting point of brimstone (sulfur) is 115 °C. This gives a very fine-grained scale for judging how miserable a temperature is based on human experience.
I suspect this won't become terribly popular.