Docks, external hard drives and other laptop add-ons are supposed to make your life easier, but they can be a hassle if you have to carry more than one. Just ask any traveler unpacking a mess of boxes and wires if you need proof. Lenovo wants to get rid of this clutter as much as you do, so it's launching a rather oddball accessory system, the ThinkPad Stack, to simplify things a bit. The modular, magnetic design lets you pile peripherals on top of each other (complete with shared data and power) to save space and eliminate cabling -- think of it as a Voltron for road warriors. As quirky as that sounds, it makes sense in real-life situations. If you need both a wireless hotspot and a battery pack on your big business trip, for instance, you won't have to lug around two sets of cables to keep them powered up.