The Hipster is a replacement for the backpack if you just canâ€™t seem to lug around enough stuff carrying everything on your shoulders. The designer, Joel Hoag, created the Hipster in response to his fatherâ€™s wish to walk across America, and he hopes that his design will lead to the growth of a sport he calls â€œadventure walkingâ€. So far there are two designs, the Hipster I, which utilizes a single wheel, making it maneuverable and compact, and the Hipster II, with two wheels for greater strength and easier carrying of heavier loads. Though you are sure to garner quite a bit of attention looking like you forgot your bike on a cross country trip, it does save your back from sure destruction if you tried to load everything in a backpack, so itâ€™s a good use of function over form. I think itâ€™d be fun to attach a few of these together and form a new sport called â€œhuman train adventure walkingâ€, but thatâ€™s just me.