I'm at uni, so no problems with dress code or what we are allowed to carry back pack wise.

Personally I carry a 35litre pack, and have one side pocket dedicated to my PSK, small FAK, SAK (a Huntsman), Mini-Maglite, extra batteries, duct tape, spare hair band ( I have long hair), whistle and a lighter. My keys that have a Photon II on them are the only thing I keep in my pocket. (The pockets on womens clothes generally being smaller than on men's from what I can see. I couldn't keep half the stuff you guys carry in my pockets!)

The top pocket is dedicated as a 'handbag', i.e. I keep my wallet, tram pass/buspass, diary, phone, lipsalve etc. in.

The main pocket has my A-Z and all the paper, files and books I might need for the day.

The other pocket usually has my lunch/ bottle of water in.