My purse, as for many women, tends to be the feminine version of Batman's Utility Belt, although I do admit that mine may be closer than most.
My current bag is one of those
back-saver things from LL Bean. It's the "sand dune" color. I would have preferred the British Khaki (because I have the LL Bean briefcase and shoulder bag in that color already), but MomWolf bought it for herself and ended up not liking it, and giving it to me didn't involve the hassle of dealing with return shipping.