Place all ingredients except chicken, sunflower seeds, and cranberries into a sealed double-zipper freezer bag before hitting the trail. At dinnertime, boil 1 cup of water and pour in enough to cover the couscous. Massage or stir the bag to mix the ingredients. Zip the bag closed, then wrap in a towel and let sit for five to seven minutes, or until couscous is soft, massaging once halfway through. When cooking is complete, stir the bag’s contents (if necessary). Then add chicken, seeds, and cranberries. For minimum cleanup, enjoy straight out of the bag, or transfer to a bowl if you prefer.