A punching bag and a pair of boxing gloves are the only tools - waiting for the customer to form his or her individual lampshade CASSIUS. The initial form for the customer to beat into shape is a cylinder. Sensors in the inside of the punching bag transmit the punches to the computer, which morph the cylinder according to the positions of the blows. Each punch changes the shape of the object. The vision in the mind of the customer comes to life through physical power.