Get in to the sustainable spirit of things this year with energy-efficient holiday lights. Save up to 90% of the energy used by traditional lights and get a whopping 50,000 hours of bulb life. You'll cough up a bit more cash, but the lights last longer while running up a smaller electric bill. Plus, Al Gore will thank you for it, and if that's not reason enough, everyone who's anyone is doing it. Available at Target, Lowe's and Costco, or buy through ComEd's online store and get $2 off each strand.