I completely agree with @YARNLADY on the subject of “green” being big business. I’m kind of skeptical of many of the products claiming to be green.
As for my family personally, we’ve done small things like replace lightbulbs with those compact flourescent bulbs (I found out we can get one case a year from our electric company for much, much, cheaper than the store). We use cloth bags, buy local foods whenever possible, recycle everything we can, and buy local produce for much of the spring and summer. I’m not fanatical about, but try to be mindful enough to make an informed choice. I would love to have a big garden, grow tons of vegetables, and then preserve them, but plants hate me. They seem to want to die rather than grow in my garden. Although so far this year, my tomatoes and basil are thriving. Knock on wood.
Unfortunately, some of the worst things we do can’t be changed. There is no public transportation available to us, so we drive almost everywhere. My husband drives a big SUV sometimes several hours a day, but he has to have a large vehicle for his business and has to run all over the state to meet with various clients or work in their homes. I also have an SUV because we have a big family and because our vehicles have to be interchangeable in case one breaks down. We can’t afford to trade them in for hybrids right now, but I do look forward to the day when at least I can downgrade to a more fuel-efficent car.