Looking through all the tarp links led me to tyvek. I had no idea people use it as a cover, shelter, ground cloth, etc. If you don't mind printing, Lowe's has tyvek homewrap 10'X100' roll for about $100 I think. Heck of a lot cheaper than the outdoor stores sell it. Of course its not camo but maybe with some cheap dye you could make it any color you want? Anyone know how UV resistant it is?