Food- What was that Elven cake in LOTR that tasted wonderfull always and kept Hobbits on the march? For little guys who ate 6 times a day, smoked pipes and drank beer old JRR was really pushing his Yorkshire Pudding there. You can get more variety and equal shelf life with a little planning.
Lembas or way bread. Lembas are actually chocolate chip cookies, which, containing eggs, butter, sugar, and chocolate cover the four survival foodgroups ( proteins, lipids, carbohydrates, and CHOCOLATE). These are the perfect food for long term or short term survival scenarios, are easily stored, and can function as a universally accepted medium of exchange as in "I'll trade you 2 dozen ccc's for that elk you've just skinned". In a most boreal survival situations, there will be lots more elk than cookies.