Every day I carry a plain, black, Jansport backpack. It was given to me by my first boss, nearly 9 years ago, when I was leaving that company for the one I work for now. Inside, I have my calendar, cell phone, wallet, bus pass, keys, and other things based on daily activities. Thurs I have choir music, 1st and 3rd Wed. I have have knitting or cross-stitch, Some Tues I have dance gear. I can't stand carrying more than one bag and it's actually the same bag I travel with. I can fit an entire weekend worth of clothes (including shoes!) in it!