You're never really disarmed. Your brain is your #1 weapon, even if you have a firearm. A cool, quick mind is more useful than a dim wit with cannon.
I most often have a pepper spray with me, and while I always carry a small pocketknife, I don't really consider it a weapon (as I have zero knife fighting training or skills). I'm sure it would become a weapon if need be, but then again, so would hundreds of other things around me. Pencils, rope/string/wire, rolling pins, household chemicals; all these non-weapon things are weapons if they are used as such.
Well let's see, pepper spray, folding knife, asp, pr24, pen and last but not least the gray matter in your head. Let's face it just about anything can be used as a defensive weapon in a pinch. It all comes down to situational awareness and knowing your surroundings and your abilities. How far are you willing to go to make sure your the one still standing at the end of the engagement?
My wife, Jean, has her own carry permit and her own arsenal.
Actually, my arthritis considered, I guess that I'm Jean's backup, not the other way 'round.
Of course, then there's my cane, when I'm carrying it—for instance in places where I'm forbidden to go armed.
And my keys, with which I could either put your eye out or crush your windpipe.
And then, well, have you ever been whipped by a brass belt buckle?
CRKT Optima knife, my High Country 4-Runner Bow, my wife's bow, my son's bow, my daughter's bow, my wife's SOG knife, kitchen knives, 3 or 4 hammers, a pile of hardwood flooring, rocks, bricks, broken bottles, a steel rod under my drivers seat... And I'm not even a survivalist! With a clear mind and determination you can use an amazing range of items as defensive weapons. Necessity dictates, the mind creates.