Four things you can buy today that will pay for themselves by 2012

Anybody can shop, but what can you buy that will save you money? Here are four items.

A Trane ComfortLink II thermostat is displayed during a media preview event for the 2011 International Consumer Electronics Show in Las Vegas, Jan. 4, 2011. The wireless device has a personal computer application to control the temperature from any room in the house. But even a cheap programmable thermostat, starting at $20, can save you lots of money.

Steve Marcus/Reuters

January 13, 2011

While it is fun buying gadgets and gizmos that will help save the environment, it is even more fun when you can spend a dollar to get two dollars in savings. These items below will do just that. And for most people, they will pay for themselves within a year!

1. "SmartStrip" surge protector

Working as a full-time blogger, I spend a lot of time at my desk and have all kinds of peripheral devices being powered by a single surge protector. The SmartStrip is indeed very smart. When you power off your computer, it automatically powers off all the other devices plugged into it. It only costs $35, and for anyone who uses a computer on a regular basis at all, this will easily pay for itself in a year.

2. Water heater blanket

If you have an old water heater, you might want to get a new one. As with most appliances, newer is normally much more energy efficient. But a way to cut your energy bill without buying a brand new water heater might be to buy a water heater blanket. Depending on your water heater, the blanket could save you 10 percent or more on your energy bill each month. You can pick one up for around $20.

A quick way to tell if you might benefit from one is to just go touch your water heater. If you can feel the warmth from it, then getting a blanket will be a worthwhile – and money-saving purchase. Of course, you can also increase your energy savings by lowering the temperature on the water heater as well.

3. Battery charger

Battery chargers have come a long way. If you remember 15 to 20 years ago how terrible they were, you might be scared off from buying one. Thankfully, the technology has improved quite a bit and now they are a worthwhile investment for many families. You can get a charger for as cheap as $10 and if you or your kids use a lot of gadgets, the charger will be paying for itself very quickly!

4. Programmable thermostat

If you are looking for an easy way to lower your heating and cooling costs, a programmable thermostat is the way to go. Think about it: Why should your house be sitting at 72 degrees for 8 to 10 hours each day when no one is there? By pulling it down to 60 degrees or so when you are gone (or asleep) you can save a ton of money each month. You can find programmable thermostats as cheap as $20, and at that price, the little gadget should pay for itself very quickly.