Suberra is a composite recycled cork slab that is dense enough to be used as a countertop or work surface in light-duty areas. Its maker uses 100 percent post-industrial recycled cork pulp and compresses it with a polyurethane binder, water, and oil. The product is naturally anti-microbial and is resistant to water, heat, and insects. Slabs measure 1 1/4 inches thick, 25 inches wide, and 36 inches long. Cost: $38 to $48 per square foot. ECO Supply Center. 800-883-7005.