Make a compost pile to reduce the amount of trash your family produces.
Plant an herb garden to have fresh herbs to use in meals.
Fix any leaks to prevent your water bill from racking up.
Consider using solar panels. In the long run they can become very cost effective.
Switch to windows that are more insulated.
Insulate your house to lower heating and cooling bills.
Turns lights off when you aren’t using them.
Change your light bulbs to a more environmentally friendly version such as CFLs