That of which I am forbidden to speak of here (with a permit and legally, I might add), Mace, and keys, but most importantly I keep my head on a swivel. Situational awareness will save ANYBODY's life, male or female. There are bad and desperate people out there (plus I live in a place where redneck IS considered a compliment), and there seem to be more of them with the bad economy. Don't be paranoid, but do be aware and cautious.
Anna