I scribble UTM GPS coordinates of important nearby places; peaks, ranger stations, road intersections... With UTM, its useful even without a GPS. Phone numbers and a list of ailments or meds would be good if you were found in bad shape. Several months ago, my grandfather had a heart attack while driving home after a stress test. Fortunately, he was able to pull into a gas station and more fortunately, he had a paper typed up listing all of his health problems, history and meds that he made for his cardiologist. This was what he handed the store clerk before he passed out. The EMTs and emergency room staff found it to be very useful. Incidently, he had quadruple bypass a few days later and has since made a full recovery feeling and acting 10 years younger! <br><br>