What did Israel put into the treasury of the LORD's house after burning Jericho?

Answer: Its silver and gold

Israel burned Jericho but put the silver and gold and the articles of bronze and iron into the treasury of the LORD's house.

“Then the Israelites burned up the city and everything in it. However, they put the silver and gold and articles of bronze and iron into the treasury of the LORD’s house.”— Joshua 6:24 (BSB)