Using a power strip is green: Back when a new desktop computer was as unwieldy as a mastiff, the power strip was better known for its useful multiple outlets th... read full tip

Using a power strip is green: Back when a new desktop computer was as unwieldy as a mastiff, the power strip was better known for its useful multiple outlets than for its energy-saving potential. This staple of dens and dorm rooms can spare you more than just the need for extension cords, though. Chances are, you've already got your TV set, your stereo, your computer, and several other electronic devices plugged into power strips. Before you leave home, flip each strip's on/off switch, and it will cut the electrical connection to the wall. This has the same effect as fully unplugging everything, and it's as simple as tapping a toe.

The U.S. Department of Energy says that in a typical American home, three-quarters of the electricity used is actually consumed by appliances and electronic devices that aren't even on (often, they're just in standby mode). These sneaky energy grabs are called phantom loads. This wasted energy is a pain for the planet, and for the purse: At least 5 percent of the average electricity bill can be traced to phantom loads.

To go a little greener: Make sure everything that could be put on a power strip in your home is plugged into one. Some devices you might have forgotten about include those with timers: window air-conditioning units, humidifiers, and dehumidifiers. Toasters, blenders, coffeemakers, and other small kitchen appliances can simply be unplugged when not in use. The average American household spends $900 annually on electricity. By taking full advantage of power strips, you'll be spending far less.