I've got an unused dog run with access to electricity right near my house. During the winter, with hauling my butt to the barn being so frigid, it seems a shame not to use it. What's the most cost effective to keep some cornish cross birds warm and cozy for a few months until we process them? I don't need fancy -- recycled materials is a plus. I can get free plywood and pallets easily. Straw bales are also easily found near here.