+1 on a good emergency kit with first aid supplies as well as fire starter stuff and a space blanket. One thing that used to kill me and cut my trips short was I would get lonely after about 4 days, especially at night. I started carrying a small and light am/fm radio that also picks up NOAA weather stations. I use it around camp and it has helped with the quietness that becomes overwhelming sometimes after a long hunt. It may be a little bit of unnecessary weight but it is in ounces and I like to stay out longer now.