A Swiss Army knife and a Leatherman. Both of those items are capable of performing a number of tasks while remaining compact and easily packable. But what if the portable speaker that provides your campsite with tunes could do multiple things? Well, Braven's BRV-PRO can not only recharge your phone or tablet, but also its smattering of add-ons provide light, extend battery life, juice up the gadget with the sun's rays and more. The speaker is still fairly small despite its modular aspirations, so it won't take up much space in your backpack. If you splurge for the full collection of accessories though, the entire setup demands a slightly larger pocket, but they're all flat and should stow easily.