Numbers 16:36-38

And the LORD said to Moses, “Tell Eleazar son of Aaron the priest to pull all the incense burners from the fire, for they are holy. Also tell him to scatter the burning coals. Take the incense burners of these men who have sinned at the cost of their lives, and hammer the metal into a thin sheet to overlay the altar. Since these burners were used in the LORD’s presence, they have become holy. Let them serve as a warning to the people of Israel.”