Did you know tea is the second-most popular beverage in the world, right behind water? If you love tea and wonder what you can do with old tea bags, give this tip a try. Place 20 or so used tea bags in a bucket or watering can, and fill it with cold water. Let it steep for a few hours. Remove the bags and toss them into the compost bin. Now use the weak tea on your plants -- in the house or garden -- to feed, water and protect them. The natural antioxidants in tea will help fight fungal infection on plants and in the soil, and the scent of tea deters garden pests like mice, too.

An electric space heater can be an efficient way to heat a room because it heats only where you want, not the entire house. When shopping for a space heater, the Department of Energy recommends you buy one that has the Underwriters Laboratory (or UL) label on it, which means it has passed certain safety tests. Choose one that has a thermostat on it; this allows you to choose the right heat settings for your home so you're not overheating a room. Be sure to keep space heaters away from automatic thermostats in your home -- it could trick the thermostat into thinking your whole home is warmer than it is. Finally, get the right size: Measure the room and use the space chart on the box to find the right size at the store.

Want to see how drafty your home is, or want a foolproof way to detect air leaks in your home? Start by turning off all combustion appliances in your home, like gas-burning furnaces or water heaters. Do this on a cool, very windy day. Shut all the windows, doors and fireplace flues. Make sure all fans, clothes dryers and vents are totally off, too. Try to make your home as airtight as possible. Now light a stick of incense. Follow the smoke, and see where it naturally wafts. If you find an area you suspect has a leak, use a wet hand to locate it; the water will feel very cool and should lead you right to the energy-hogging leak.