a late reply - but we have started to pack Nutri-grain Elevenses bars (UK name). Slightly bulky package but moist and very tasty. My son and I have five packed in the butt-pack grabit kit - one for each member of the family and there is a pack in the car (six bars). I carry a couple in my works bag and they stave off hunger quite well when we can't get a system up and have to work late. They are also good when we go day walking as snacks - and being a consumer product they do not cost the earth. Each bar is stamped with a use by date - and having looked at the pack dates the ones in there are to be replaced March 2002.<br><br>The other thing we both have are small nalgene screw top bottles into which we pack our own mix of toasted sunflower seeds, chashews and raisins rolled in brown sugar. These are robust and store well.<br><br>Clive<br><br><br>