It's a little late, but I thought I'd post this... Generally, these are good ideas, I think.
Save water by decreasing your shower time -- or rather take a bath, which uses less water than a shower.
Get in the habit of brushing your teeth with the water off, and encourage your children to do so, as well.
Recycle – junk mail, cell phones, paper products, plastic bags, and more.
Freecycle your old stuff
Switch from paper and plastic bags to reusable bags and totes. Try Envirosax or Dogeared’s neat styles.
Forget the electric or gas dryer, and hang dry your clothing.
Opt for direct deposit, online banking, and paperless statements to reduce your paper usage.
Try your hand at composting (planting scraps from fruits, veggies, and coffee grounds outside), which will help create better soil and less landfill waste.
Don’t purchase disposable water bottles, but rather use recyclable (and refillable) beverage containers that you can fill with filtered water.
Unplug all of your appliances when you leave the house to save energy (and prevent a fire hazard).
If possible, take public transportation or walk.
Don’t use plastic storage containers, and definitely do not heat food within a plastic container in the microwave.
Keep one set of dishes at the office, including: a cup, utensils, bowl, and plate. This will prevent you from reaching for disposable utensils, cups, and plates.
Save stained or ill-fitting clothing to use for dusting and cleaning.
Use rechargeable batteries -- Duracell now has a line of pre-charged rechargeable batteries!