After unlocking the Urns of Wealth House Decoration, breaking urns can drop Charon's Obol (coins). Easily identify which urns drop coins by looking for containers that are yellow, gold, or off-colored. If you look carefully, they might be decorated with a Charon's Obol symbol. Scanning for these clues will save you some time and you won't have to break every urn you find in each chamber.