Here are some of the things we do in our home that make a "small difference".
Paper Towels - I try to use as few paper towels as possible. I find that we tend to use a lot of paper towels without even realizing it. I keep tea towels handy for drying hands and dishes in the kitchen. Instead of using paper towels for napkins, I have towels that I have cut up in large squares to use. You could also use cloth napkins that are available in most home stores.
Newspapers - While I do recycle a lot of newspapers, I have found uses for them around the house also. They are great to use in the garden as a weed barrier. You can use them as book covers for your kids. The comics make great wrapping paper for children's gifts. And last but not least, newspapers are great for cleaning windows. They provide a streak free finish to windows, mirrors and windshields.
We have replaced light bulbs in most of the lamps and everyone has become better at turning off lights and electronics when not in the room. I also have lots of house plants to not only improve the air quality of the house, but they add that little extra warmth to the overall decor.
Water - My neighbor gave me a Brita water pitcher which I love! Now instead of buying bottled water, I can keep water in the fridge and use a reusable water bottle to carry with me.
While this may not seem like a lot, it does add up in the long run. If we all do just one thing or a few things, together we can change the world!