The world needs a new source of energy, an unspillable source.

What can I use for my house to help me conserve electricity for devices that are in the outlets?

Are there any devices that I can plug in between the electrical device and the outlet that will help me conserve the amount of electricity I use? My TV went from a 27″ to a 46″, I now have 3 laptops as opposed to one, I have a new boiler which has an electric switch and a new (used refrigerator) that plug in. I unplugged the Air Conditioners and I bought the twisty light bulbs, but I would like to know if there is anything more that I can do to conserve?

Thank you