1) drive an all-electric vehicle (just replaced DH's ancient home built electric truck with a Wheego Whip http://wheego.net/ ) and a 2004 Toyota Prius for longer trips.
2) Live less than 5 miles from work and school
3) Reinsulated and weatherproofed our 1947 house
4) Use reusable bags at all stores. http://baggubag.com/#Shop These are my favorites because they sell a little "purse sized" bag that can hold about a dozen or more it is easy to carry in the car and bring into the store and still keep hands free for kids and such.
5) All natural cleaners (make my own) and soaps
6) Buy used clothing, toys, books, etc.
7) CFL bulbs and switching over to LED where practical
8) Water saving shower heads and let our lawn go dormant in drought times
9) Recycle everything that is accepted in our community
10) Cloth wipes instead of toilet paper in 1 of the 2 bathrooms. And use clothnapkins, cloth towels, and cloth rags instead of paper towels, paper napkins, etc. The only paper towels we buy are for when we are doing messy construction type work with caulk or other non-washable substances.
There are tons of other little things...power to you in your efforts :)