The Hoenn region is littered with hidden items, often invisible to the naked eye. To find them, you'll need the Itemfinder, a Key Item given to you by a scientist in Mauville City after defeating Wattson. When used, the Itemfinder will emit a signal if a hidden item is nearby. The closer you are, the faster the signal. Face the direction the signal is strongest and press 'A' to pick up the item. Hidden items can include valuable Poké Balls, rare Berries, TMs, and even evolution stones. Make it a habit to use the Itemfinder in every new area, especially in grassy patches, rocky areas, and near suspicious-looking objects. This is an excellent way to stock up on resources and discover rare treasures.
