Taming Wall Warts
Here is an interesting experiment — try to turn off everything electrical in your home. Turn off the lights, heater, refrigerator, AC, TV, stereo, everything – then go out and look at your power meter.
Charge All Battery Charger Switcher
Even the cheapest lead-acid battery will cost between $20-$30 to replace, not to mention the hassle of yanking it out, installing the new one, and then explaining all of the battery-acid holes in your clothing to the wife.