What is a toy that flies on a string?

A toy that flies on a string is often referred to as a "kite." Kites are typically made of lightweight materials and are designed to be flown in the wind while tethered to a string held by the flyer. They come in various shapes and sizes, ranging from simple designs to elaborate models. Additionally, there are other flying toys, like "tethered flying discs" or "helicopter toys," which also operate with a string or line for controlled flight.