A bottle opener is a simple tool designed to remove the metal caps from bottles, typically those containing beverages like soda or beer. They come in various shapes and sizes, including handheld devices, keychain openers, and wall-mounted versions. Most bottle openers feature a lever mechanism that allows users to pry off the cap with minimal effort. Bottle openers can be made from different materials, such as stainless steel, plastic, or wood. Some designs are decorative and can be found in homes or bars, while others are practical and portable. They are essential for enjoying drinks that are sealed with caps, making them a common item in kitchens and picnic baskets.