i bring 4 nature valley protein granola bars in dark chocolate and peanut butter flavor, i remove them from their package and put then in a ziploc baggie which isn't silent but much better than original packaging
i also fill 2 miniature gatorade bottles with water (probably 16 to 20 ounces total)....i like the gatorade bottles because they are thick and don't make noise when you use them like the new water bottles do that are only a little thicker than typing paper
i just space all this out and only eat and drink when i really have to so that i don't have to pee that much or get down and poop ever
i used to carry way more water and snacks but that was heavy and had me climbing down once per day
if i'm feeling feisty, i'll throw in a few pieces of beef jerky
on the way in, i usually stop and get coffee and a mcdonald's breakfast meal to eat on the drive in and try to time things so i drop a deuce in the woods next to the wma parking lot right before i hunt