From Green Gadgets For Dummies, by Joe Hutsko:

Ten Green Gadget Money Savings Tips

Here are some quick tips that can help you save money by using gadgets the green way:

1. Replace single-use disposable batteries in your gadgets with rechargeable ones - then properly dispose of all of those dead single-use cells at your local grocery, hardware or office supplies store
2. Turn down your TVs brightness and contrast settings to the lowest comfortable level; new TVs leave the factory with all of their picture-related settings cranked to the max to standout on the showroom floor, so adjust yours when you bring it home
3. Unplug cell phone, MP3 player, and other gadget chargers after the battery is charged, as well as other “energy vampire” devices that go into standby mode when they’re turned off to stop them from sipping power; or plug them all into power strips so you can instantly turn them off all at once
4. Disable your computer’s screensaver and adjust its power savings settings to turn off the display when you’re not using it for more than five minutes, then switch the computer to standby or sleep mode after ten minutes, then switch to “hibernate” mode after thirty minutes (if the feature is available)
5. Turn off any energy wasting features and settings you’re not using on cell phones, computers and other gadgets, including wireless (Wi-Fi) networking and Bluetooth, and GPS; also, reduce the screen’s brightness and activate auto-lock or screen dimming and shutoff options on gadgets that offer these options
6. Read and review documents on the screen instead of printing them on paper - if you must print, reduce your printer’s quality setting to 300 dots-per-inch, print on both sides of the page, print in color only when necessary, and refill inkjet and toner cartridges rather than buy new ones
7. Reduce fuel consumption and auto emissions by shopping and banking online, and renting or buying downloadable and streaming movies and TV shows instead of renting DVDs at the local video store, or Netflix’s rent-by-mail; instead, choose Netflix’s “Watch Instantly” movies and watch on your computer, TiVo-equipped TV, or other streaming gadget
8. If your thermostat isn’t programmable get one, then set so it’s only heating or cooling when you’re actually in the house; even inexpensive models can accommodate workweek and weekend turn ons and turn offs based on your schedule
9. When purchasing new gadgets, look the most energy efficient models by visiting mygreenelectronics.org, energystar.gov, and the green gadget-aware websites below to stay up on the latest news, reviews, trends and feature stories that can help you make the eco-friendliest choices possible - the longer term benefit can shave more than a little green off your utility bill
10. If donating your mobile phone, MP3 player, or computer isn’t an option when you need to replace it, consider selling it locally on Craigslist, or trading it in for cash or credit toward a new, more efficient model by visiting the gadget trading website EZTradein.com.