Kites are a type of bird-like aircraft that have been used for centuries for recreational purposes. They are typically made of lightweight materials such as paper, plastic, or fabric and are flown in the air by the wind. The term 'kites, e.g.' refers to any type of kite, including traditional diamond-shaped kites, box kites, and delta kites. Kites can be flown solo or in groups, and they can be used for a variety of activities, including racing, stunt flying, and aerial photography.