Any type of sandwich but use hamburger buns less likely to leak through. Hard boiled eggs in plastic container ,Can of Slim Fast not because of diet but they do fill you up
Usually we eat pretty good, but this year in the deer blind I introduced my son to a potted meat sandwich. He ate because he was hungry but still makes fun of it. To be honest, it had been a while for me too and I had forgotten how bad that stuff smelt.
water and may get a biscuit in the morning. other then that a snickers during the day gives me a good amount of energy so I usually have one in my vest or truck