I also carry a small mirror. In my shoulder bag, along with the other things I have, I have a set of tweezers, fingernail clippers, and a double mirror that is rubber coated. I found in a beauticians supply store when the wife wanted some high end shampoo and conditioner. It was marketed to women so they can check eye makeup or whatever, but I carry in case I get something in my eye or whatever. One side is normal mirror, the other is 5X magnification. I have used it several times when gotten dust, or small something or other in my eye. Also can be used for signaling. This is one piece of equipment I am glad I carry.