(Also see Paint, Stains, Finishes)
Outdoor fireplace:
http://www.regency-fire.com/Products/Gas/Outdoor-Gas-Fireplaces/HZO42.aspx
Snow-melting radiant heat: http://www.wattsradiant.com/solutions/snowmelting/
Smart Shingle system: http://www.ecoshel.com
Lightweight building blocks (barbecues, outdoor kitchens, etc.): http://www.eldoradostone.com
Fire-resistant sheathing: http://www.lpcorp.com
Waterproof alternative to wood deck joists: http://www.wahoodecks.com