i think for me i would stuff my backpack with a pair of jeans, a pair of army pants, 2 shirts, a tanktop incase its hot, a hoodie, and a camo overcoat, i'd bring i guess at least 2 pairs of socks and underwear and my boots, though i would need to get new ones soon for cheap... i'd bring a knife, my phone (id have to cancel the cell plan), a charger, a water bottle. sewing materials to patch clothes when i need to, and scissors to cut my hair. i think that would cover most of the essentials and wouldnt be impossible to fit into a pack. i guess i would have to acquire a hammock or sleeping bag somehow too.