pemmican (us wellness), hard salami (columbus cacciatore), prosciutto and hard boiled eggs (i leave them in their shells), keeps you going all day long and no need for refrigeration, though the eggs will probably only last 48 hours, everything else is good for week +. Fresh eggs can be left unrefrigerated for upwards of 5 days but, I'd be worried they'd break. I pack in herbs and spices in case we catch some fish (I'm an optimist, not a realist). We also usually bring some hard(ish) cheese. You could bring a can of nice sardines. Some good chocolate and a handful of nuts.

Whole Sweet Potatoes / Yams and some butter (or oil). Just slice thin and pan fry. Easy to pack and super filling. Hardest part is just finding a good surface to cut it on.

beef jerky, dried sweet potatoes

1) Beef jerky (obvious)
2) Hardboiled eggs
3) Paleo chocolate cupcakes - made from cassava flour/dextrose/eggs/coconut oil
4) Almonds, walnuts, pecans - for my peoples, because I have a slight nut allergy.
5) Dehydrated apples + dextrose = freaking awesome

You can try some home-made Larabar clones. Here is a place to start: Homemade LaraBar Recipes

Do you guys make your own pemmican?

make your own jerky and snack it...