i have a bag that always goes with me. is has a small led flash light, cammo duck tape, extra blank logs, my travel log book, empty cache containers, spool of green flower arrangement wire, band-aids, leather man tool camera, batteries, and i took an old solar light and stripped it down to just the battery housing and the solar panels. (i can leave it on the dash or take it with me. i used it during a week long hike thru yosimite and only took 6 rechargeable batteries. it keep my cam and gps going the whole time i was there.) there is also some baby wipes for cleaning muddy sappy or what ever hands and cleaning wounds.