I have a pretty good pile of metal roofing "scraps" its champion brand. The minimum size is 3w X 4 long blue in color. 1.50 a lenial foot good for wood shed, dog house what ever. You could overlap the seams to extend the legnths. I think I have some ridge also

Any intrest? get rid of that blue tarp over the wood pile.

The way I am figuring it a 3x4 piece would be 6.00, cover that woodpile canoe or what ever in my case I am using to cover my new shack. That will house the tiller and mowers and perhaps a quiet area to study.