Well I'd die without my purse.
Cellphone
iPod
Keys
Wallet
Fortune Cookie fortunes
Make-up bag: with make up in it of course
Pads & Tampons: even if it's not "my time of month" my friends usually ask me for some
Breath mints/gum
Hand sanitizer
Body lotion
Body spray
extra change
Yeah... theres's a lot..... there's probably more that I don't know of.