Ключевые слова: add, adhd, attention, background, balance, bearing, bearings, blue, boy, centrifugal, ceramic, childhood, children, craze, deficit, disorder, distraction, energy, entertainment, fad, fidget, finger, focus, force, fun, gadget, game, gold, gyro, gyroscope, hand, hit, hyperactivity, kid, kids, object, plastic, play, popular, relaxation, relaxing, relieving, roller, rotating, spin, spinner, steel, stress, toy, trend,