There is a company selling products which will standardise plugs and save power we all using in our gadgets.
Green Plug is an embeddable, universal, energy-efficient power technology for DC-powered devices including cell phones, PDAs, laptops, printers, digital cameras, camcorders, cordless drills, MP3 players and dozens of common devices that today require individual, custom AC to DC power transformers or chargers. Product manufacturers that adopt Green Plug design kits will provide a universal power connector to their products. Universal Green Plug power sources deliver power to these products via a standard power cable that works for every device! Users no longer need to have dozens of wall warts and chargers to power and charge their electronic devices.