Wow, this was just a "goofy" idea. I get hammered at work and can't check in for a few days, and you guys have taken off with it! My idea was NO basic pantry, unless there is no meat or source of fat on the market. Flour-find something else, potato mash, ground rice, etc. Sure you can't make bread, but so what! Use only the seasonings available on the market, which will make this a truly seasonal challenge.
I used to sell at the South Bend Indiana Farmer's Market. It has gone about 80% crafty junk now, very little actual foodstuffs left. When I was there, I was one of three poulry sellers, we would bring whole chickens, turkeys, ducks, whatever, and cut them to order right there at the market. Averaged 1500 lbs a week in chicken alone during the summer. We kind of did the competition thing in the spring when the morels would come in. A giant morel cook-off. Now I've got morels popping up right out my back door, and for 350 acres beyond, so sadly, the excitement is wearing off.