Numbers 16:38-39

16:38 As for the censers of these men who sinned at the cost of their lives, they must be made into hammered sheets for covering the altar, because they presented them before the Lord and sanctified them. They will become a sign to the Israelites.” 16:39 So Eleazar the priest took the bronze censers presented by those who had been burned up, and they were hammered out as a covering for the altar.