Part of the company‚Äôs line of sustainably manufactured masonry, these permeable pavers are designed to manage stormwater by allowing rain to soak through. They incorporate 40 percent post-industrial recycled material as a binder and forgo the energy-intensive kiln firing required for clay pavers. Cost: $2.25 per square foot. CalStar Products. 877-700-9501. www.calstarproducts.com.