Survival Tube Cave For One
Survival Tube Cave For One 9' long X 7' wide cheap tarp. Sale price: $4.99 at Harbor Freight Tools (in Utah). Duct taped long wise, both sides. Five pieces, 1/2 inch PCV pipe. With zip ties and PVC tees. 36" long (maybe?) Try one and adjust the length, and rope.
Some experimental boats made from coroplast and other corrugated plastic sheets. coroplast sheets suppliers
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