I've taken lots of diffrent things in the woods over the years. Jerky (venison or Jack Links) is always prime, so are slim jims. The small peanut butter and cheese crackers are good and walmart/sam's club trail mix comes in a wide varity for minimal cost. There's almost always a Mountain Dew in the daypack or coat pocket.
Anymore I don't eat much during the day even on work days. Sometimes my first meal of the day comes at 4 or 5 o'clock. So spending a day in the woods without food isn't much of a big deal and I rarely take munchies anymore.
On a side note I worked with a guy and we were both trappers. He had a partner at one time but it didn't work out. Everytime he turned around his partner had his fingers in the bait. Sardines.