I just use a backpack too. I tried the rack and bungie cord thing for a while. Whenever I stood up to pedal it felt like the bike was being pulled away from me as I swung it side to side. I carry my work shirt, company approved ball cap, tire levers and patches, hairbrush, deodorant, cell, wallet, keys, etc etc. I even carried an alternator for my car in it a few times.(Long story, mass produced rebuilt alternators are NOT built to handle 7000+ rpms, regardless of the intended application). I have been wanting to try a trunk bag and rack, as I really don't carry a whole lot of stuff most of the time. I like to keep iit light as possible.,,,,BD