Entertainment system comprising a computer, multiple image display screen, multiple input devices and a printer; Unfilled ink cartridges for photocopy machines or computer printers; Digital cameras; Ink jet document printers; Laser equipment designed for cutting, drilling, marking, engraving and shaping optical lenses for eyeglasses; Laser equipment designed for drilling optical lenses for eyeglasses; Laser equipment designed for engraving and tinting optical lenses for eyeglasses; Lasers for...