A lighter is a small device used to create a flame for igniting materials such as cigarettes, candles, or campfires. It typically consists of a fuel source, a spark mechanism, and a casing. Lighters can be disposable or refillable, and they come in various designs and sizes. There are different types of lighters, including butane lighters, electric lighters, and match lighters. Butane lighters use a flammable gas, while electric lighters generate heat through an electric arc. Each type has its own advantages, such as portability or ease of use, making them popular tools for many activities.