What have you found as the best way to carry your things in the parks? There will be all adults in our group so I don't need snacks and diapers. Our camera is tiny so can slip in a pocket but I still need reading glasses, park tickets, hand-wipes (for the germophobe in me etc. I refuse to do the fanny pack thing and would love to go "hands free" so not sure what my options are - a backpack seems too cumbersome. Any ideas??