You've seen modular controllers and even modular phones, but here's a new twist: a modular speaker system. Meet SparkBlocks, a crowdfunded audio system that's just as elaborate (or simple) as you want it to be. The basic unit is little more than a portable speaker with a 4-hour battery, but you can attach components that turn it into much more, including a media hub. Hook up a SmartBlook and you get a tiny touchscreen computer that can answer phone calls, get alerts and download apps. Other add-ons will boost audio quality, charge your phone, clip on to your bike and even light up your camping trip.