LXX Num 16:38

καὶ ποίησον αὐτὰ λεπίδας ἐλατάς, περίθεμα τῷ θυσιαστηρίῳ, ὅτι προσηνέχθησαν ἔναντι κυρίου καὶ ἡγιάσθησαν, καὶ ἐγένοντο εἰς σημεῖον τοῖς υἱοῖς Ἰσραήλ.

As for the censers of those who sinned at the cost of their own lives, hammer them into sheets to overlay the altar, for these were presented before the LORD, and so have become holy. They will serve as a sign to the Israelites.”