I'll second all of tumbalinas recommendations.
I've had great success with vac-pacing small sausages of many kinds (anything well cured or smoked, in one serving amounts) along with hard cheeses (aged gouda is fantastic) and some well cured hams (country (salt) ham and procuitto are perfect.) These are all foods originally meant to last at normal temps, and by vac-pacing them in regular quart freezer bags you can really extend their self life without too much extra package weight (and they don't smell either.) You can also do this with really good moist jerky and keep it fresh. It rather extends your protein possibilities outside of meals and satisfies the craving for something you can sink your teeth into besides noodles.
I also usually carry so pure chocolate with me (DelRay 72% chocolate "discos" are my favorite) as its sometimes nice for a quick boost.
Strategic