Turn off sprinkler systems when it rains. Don't water plants during the day because water evaporates more then. Buy your friends and families rainforest acres as gifts and medicine gifts instead of useless stuff. Put on a sweater instead of turning on the heater. Don't burn trash or newspapers in your fireplace.
Colored paper releases toxic heavy metals into the atmosphere.
Turn off extra lights. Dry laundry outside on a clothesline instead of in the dryer. Recycle single-use batteries instead of throwing them in the trash where the dangerous metal content can leach into the waterways. Better yet, buy rechargeable batteries, especially solar powered. Choose not to buy foods and goods that are overpacked.