Gyro FX
SI510TEA - $19.95

Fun, fascinating Gyro FX™ gyroscope. Revs up in its charging base at the push of a button. Pick it up and its 10,000 rpm create powerful centrifugal forces. Balances on the tip of a pencil or pen when whirling. Pulls, tugs and exercises your hand. Spins like a top on flat surfaces.

Source : Sharper Image