A flashlight is about the only thing they'll still let you carry on a plane. I carry my Surefire E2E clipped in my pocket and haven't been questioned about it yet.
Yeah, they'll let you have a light or a sharpened pencil, but take away your tweezers. <img src="/ubbthreads/images/graemlins/rolleyes.gif" alt="" /> They took my Sliver Grippers...