The NEST Learning Thermostat is a sexy little gadget that can knock 20 percent off your energy bill by "learning" your schedule and adapting to climatic needs. It's smart enough to know—and respond—when you've left the house, though you can control it from anywhere via smartphone.

A rewarding leaf appears when it's at energy-conserving temperatures (often, only one degree below your usual setting), and it sends you a monthly email detailing exactly how your home is consuming its energy. $249

Love the sophisticated chevron look of Missoni but hate that most haute brands don't give a hoot about the environment? Go with this COYUCHI Zigzag Matelassé Coverlet for a similarly mod look.

Its yarn-dyed cotton (no toxins or bleaches) is approved by the Global Organic Textile Standard, the strictest textile certification. Choose from three sizes, from throw to king. $122 to $360

For anyone who's ever wished for a campfire atop the coffee table, the Lexington Tabletop unit by ANYWHERE FIREPLACE is a sleek, smokeless device fueled by liquid bioethanol; a quart of the plant-based stuff burns for about five hours in this self-contained centerpiece.

A flickering flame heats up to 375 square feet of space—no flue necessary. Choose from four colors. $170 (SmartFuel sold separately: $45 for six 1-liter bottles)

Throw the Dual-Temperature Body Wrap from GAIAM—a solar-powered company—into the microwave for a minute or two, then drape it around your neck, back, or any other stiff area and let the damp heat work its magic.

A lavender aroma adds to the soothingness. Come summer, you won't have to stash it away: A spell in the freezer turns it into an antidote for sweltering weather. It comes in a recycled, recyclable package. $25

If tea is your steamy beverage of choice, try the seasonal flavors by NUMI ORGANIC, which include Winter Spice (white tea with orange peel, cinnamon, and cloves) and Holiday Chai (Assam black tea with cinnamon, cardamom, anise, and ginger).

At Numi's solar-powered headquarters, CEO Ahmed Rahim, a master blender, sifts through non-GMO, fair-trade-certified herbs and spices that end up in biodegradable bags packed in 85 percent recycled boxes. $7 for an 18-bag box