Can you answer geoxena's question about backpacks?:

I normally use shoulder bags, but I need a solution for carrying more stuff to the office and to college at night. Wearing a backpack would make my life easier — I'd rather have my hands free than have to carry an additional tote or wheel something behind me. Besides, I think a backpack would be be better for my back and neck. But I always wind up slinging it over one shoulder with my handbag (which defeats the purpose of a backpack), because it's a hassle to wear both a shoulder bag and a backpack. The straps get bunched up and it's harder to access stuff. Do you put your handbag inside the backpack? I don't like investing in a good designer handbag if it gets hidden away. But I can't carry my backpack around teh office, so I do need both. Help, please! I need a system that works. Thanks!
While it seems to be a sensible answer to say "carry less crap around," doing so isn't possible when you live and work in NYC, using public transportation, are out ALL day long, and go from work to school. I need to bring my everyday stuff as well as shoes for commuting, my lunch, my textbooks, homework, etc.

Backpack Tips