StabiliGrid: Product details: a snap-together grid that is laid on a stone/gravel foundation, then filled with topsoil and planted with grass seed. Cost: $1.50 to $3 per square foot, uninstalled, depending on product grade, plus shipping. More information: www.stabiligrid.com
Sandhill Industries glass tile: Product details: Tiles in various sizes and two finishes, matte and glossy, for kitchen or bath. Cost: From $24 per square foot uninstalled, depending on size and finish. More information: www.sandhillind.com
EnviroGlas: Product details: Countertop material made of recycled glass and porcelain in an epoxy. Cost: $45 to $70 per square foot, uninstalled, depending on style. More information: www.
EcoSurface: Product details: Recycled rubber flooring tiles that do not require sealing. Cost: $5 to $19 per square foot, uninstalled, depending on tile size and thickness. More information: www.ecosurfaces.com
EcoShake: Product details: Roofing tiles made of recycled vinyl and cellulose. Cost: $275 per square (100 square feet), uninstalled. More information: www.ecoshake.com
PaperStone: Product details: Nonporous countertop material made of recycled newsprint and resin made from cashew fruit. Cost: from $42 per square foot, uninstalled. More information: www.