+1 on the idea of a cart, but one that is not too unusual for the area. "Borrowed" grocery carts, wheel barrows, radio flyer wagons, garden carts, etc. all can be useful in the right circumstances and environment, and help move a lot more stuff. Even some of the wheeled backpacks and luggage bags could be used in a urban environment. My favorite bag has wheels and an extending handle, then converts to a backpack.