I'm a little confused, here. What would be in such a kit? I carry an awful lot of junk in my truck that I think I would survive alright. There is no way it would all fit in a Nalgene bottle, though. Between the first aid box, candles, fire starters, the radios, water filter and sleeping bag, I'd be hard pressed to fit it all in an Action Packer if it was kitted. Now in the backpacks I carry a much smaller subset of things, in particular a smaller first aid kit. Is this the kit you're thinking of? Being a MTB patroller I have always carried more junk that your average cyclist. I have a small bag that goes with me on every ride (except races), that is the first aid, safety blanket, a fire starter, a couple of purification tablets. Then I carry a multi-tool, knife, sun block, food and clothes (how much extra food and clothes varies on the length of the ride, though). I add a second bag in the ski pack that has the waxes (minimally Swix blue and red, as well as Glop Stop and glide wax), a binding tool, extra binding and boot parts. Basically I find that I vary the amount of stuff I bring based on the length of the trip, but I always have at least a small amount of 'survival' stuff.