Remote-Control Hands

You know when you reach for something carelessly and accidently knock something over with your arm? Now you need not have this problem. Remote-control hands would have a transmitter/receiver attached to each shoulder, to transmit the electrical signals from the nerves remotely to each hand, and to receive sensory information from them. A similar thing would be attached to each hand, to do the reverse. each hand would also be fitted with a device to keep it airborne (possibly some kind of rotor - let me know if you have any other ideas), and a rechargeable battery to power both these things. (The hands could recharge every night). The arms would have to be reattachable, though, to enable climbing etc.