Lenovo is onto something with its new Power Hub. The $US75 laptop charger comes with four built-in USB ports so that you can power and connect several USB devices.
The charger does use up one of your existing USB ports, but that's definitely a worthwhile sacrifice. All that needs to be done is for someone to make sure that laptop chargers with built-in USB ports like this become standard among all laptop makers. [Lenovo Files via Nexus 404 via Dvice]