* I turn out the lights and electronics when I'm not using them, though the computer has to stay on for business purposes.
* Keep the AC or heater on only what it needs to be- I'm a big fan of stripping down when it's too hot or bundling up when it's too cold.
* I don't litter.
* I used to recycle, but then I found out that most of it goes to the landfill anyway, so it was just a waste of my time (here at least).
* Refuse straws as well, but not for the environment