This year, the real squirrels and this aardvarkian will patriotically convert their porches/doorsteps to covered firewood storage, and install an air lock/windbreak system to cut down on drafts. Wooden pallets and scrap wood can be picked up free, at various locations, on occasion. The "big boxes" probably recycle their cardbord, though. The liquor stores have always been willing to give away their empty packaging materials.