Lucky someone else lost yours. i lost my own. Assuming the ignition is the original, you can go to the dealer and they can give you a new one for about 25 bucks. Just got to give them the vin.
I'm pretty sure someone replaced my ignition before I got my YJ. I think I'm stuck replacing the who thing... while sitting in the parking lot at work.
If ya find a truck to unlock the steering, I'd love to know how.