I'm being more cautious of recycling cans, boxes, etc. It's surprising how many blue bags we throw out every two weeks now that use to all just go into the regular garbage.
In the past couple of years I have also rid ourselves of 2 old freezers and bought a new energy efficient upright. We also put in a new energy efficient hot water heater, and just bought new front loading washer and dryer that will save a lot.
I have to admit that I haven't started the public transportation yet even though our city has a good bus system, but I have tried to be more aware of how to condense my errands so I'm not back tracking etc.
Every little bit helps.