If you’ve recently made the switch from plastic grocery bags to reusable cloth ones, good for you! Now turn your attention to the environmental impact of something else you use every day: electronics. Computers and other gadgets gobble more energy than you might think, and many are made with materials that can be hazardous to the environment after they’re thrown away. To help you find better alternatives, the Consumer Electronics Association has put together a guide to earth-friendly devices. So if you’re thinking of buying a new laptop, cell phone, or TV, go to mygreenelectronics.com to study up. There you can calculate how much it costs you per day to run the machines you currently own—that will probably persuade you to spring for a greener replacement or two.