right now in my ruck there are two flashlights (2 AA Maglight and a AAA minimaglight), a Gerber multi-tool, a Gerber folder, a cigarette lighter, and a small (about 1 1/2" square) piece of parafin/sawdust fire starter, my cell phone, a small first aid kit (in a band-aid can), a whistle and my reflective belt. All that stuff stays in one pocket of my ruck. When I'm not on base in the middle of Germany, it's still there. When I'm in the US in the woods, it's still there. Now that I think about it, I had better had a sharpener just in case and maybe 50' of 550 cord. That'll add another 6 ounces and still fit in that one pocket...
Had a big power outage one time when I was in Alabama. My building didn't have any windows... out pops the mag light and Mikey was beatin' feet out of the building whilst everyone else was getting used to the "emergency lighting" which didn't quite live up to it's name... NCOIC said I was the only SOB who would have a flashlight with him at work, on base, in peace time, in the US and in the day time!