Always my cellphone and laptop(essential) because the office computers are always slow.
Pens, pencils, my wallet, mirror, lip gloss, ladies' essentials, toothbrush, floss, keys.
A bottle of water, an ensure or some time of energy shake, a bowl with my home-cooked lunch, healthy snacks.\
Maybe a textbook or two with highlighters and paper for printing. One book for all my notes, which almost always never gets used because the profs always give handouts, powerpoints, etc...