Trail mix was made for hiking! Used to be called "gorp" (good old raisins and peanuts). Instead of buying the roasted, salted nut version, make a healthier version on your own. Soak some raw almonds overnight, drain and let dry (soaking activates the enzymes). Add dried fruit like raisins, goji berries (very nutritious, taste like a cross between cranberries and cherries), chopped figs, and other raw unsalted nuts like cashews, and seeds like pumpkin.