Money is abundant in Luigi's Mansion 3, hidden in almost every object. Vacuuming curtains, opening drawers, breaking vases, and even shaking plants can yield coins, bills, and gold bars. While not strictly necessary for progression, collecting money contributes to your final score and can be used to purchase items from Professor E. Gadd's lab. Revisit cleared rooms to vacuum up any missed cash, as it respawns in some areas.
