What do YOU do to be green?

I'm interested in what you folks do to help the environment and live a greener life.

At my house, we:

1. replaced all incandescent light bulbs with compact fluorescent (and haven't had to change a one yet! 3 years and counting!)
2. recycle paper, plastic, glass and steel cans. Our city even has a curbside recycling program. All we do is put it in the container they supplied and set it on the curb on pick up day. How easy is that? Cost? $4 bucks a month for 2 pick-ups per month.
   
3. turn off lights when we're not in that room; don't use lights when there's sunlight (we have skylights)
4. combine trips in the car so that all necessary trips are done in sequence, in a logical order so that we don't do a lot of backtracking.
5. purchase in bulk to reduce packaging waste
6. compost (or feed to the bunnies) veggie peels and other organic waste
7. buy organic when we can afford it (we limit this to things like grapes, carrots, apples, nectarines and other produce with thin skins that are heavily coated in pesticides/fungicides)

So what else could we do? I'd love to hear what others are doing!