*Carpooling-- Do you commute to the office? See if you can find a friend that lives nearby to carpool with. Another option for some people is to telecommute one or two days per week. Especially with gas prices the way they are, this can make a huge difference in your budget! On a smaller scale, how about carpooling to the grocery store with a neighbor? Perhaps someone who is elderly and doesn't drive would pitch in for gas money to run errands with you. It doesn't hurt to ask!
*Unplug your electronics chargers when they are not in use! Even when you are not charging something, these will suck electricity when plugged in.
*Only run dishwasher/washer/dryer when they are full. This saves on water, electricity, and detergent. Also, try this homemade dishwasher detergent: mix together equal parts borax and baking soda in a clean jar. Use 2 tblsp. per load (put in the bottom of DW).