Free: Contests & Raffles.
All of my hunting buddies laugh at how much chow I take with me. I generally have enough to get me well into the next day with out the tummy grumbles. With that said don't over think it. There is now reason to suffer while hunting especially if just plan to be gone for the day and the worst case scenario is you have to spend the night in the woods. Just load up on things that you would enjoy eating while hunting. Some healthy, some not so much. You will burn calories. If you get into a situation where you may have to pack a long distance. It helps to have something to put in your tummy when needed. Also food fuels the furnace and helps keep you warm. Again don't over think it.