Buy local food when possible

Consider the amount of pollution created to get your food from the farm to your table. Whenever possible, buy from local farmers or farmers' markets, supporting your local economy and reducing the amount of greenhouse gas created when products are flown or trucked in. [Local Harvest]

Kill the power when not in use

Things like computers, printers, and even some appliances have a constant, but small, draw of power even when they are completely turned off (or so you think...). Unplug, switch off, or reduce where possible, and you'll find your hydro bills on the decline. [Kill a Watt] or [What is Phantom Power?]

Make your own household cleaning supplies

Most modern synthetic cleaning products are based on age-old formulas using natural ingredients that were passed down through the generations because the chemistry was right. Going back to the original naturally derived ingredients is a way to make cleaning products that work, don’t pollute and save you money. Most are found in your kitchen cupboards. Mix and match with well-chosen and environmentally friendly green cleaning products found in health food stores, and you can easily and simply transform your home into a non-toxic and healthy haven. [Make your own cleaning supplies]

Share a ride to work. Carpool!

The easiest way to save money while travelling is to carpool or ride-share whenever you can. For the morning commute, it basically halves the per capita fuel charge with two people in a car, and as long as you buy the driver their coffee, you can save money and the planet at the same time.
[Rideshare or Car Pool]

Can, Freeze or Dehydrate

Anything that you grow in your garden, or cook in your kitchen for that matter, should be able to last. You can save money by extending the life of certain foods, especially the ones you grew yourself. It can be as easy as getting some glass jars for a big pot of soup, but there are many little things you can do to save the cash. Your food doesn't have to travel as far, which means less harmful GHGs from all those trucks!
[Can or freeze or dehydrate]

Adjust your thermostat seasonally

Adjust your thermostat one degree higher in the summer and one degree cooler in the winter. Each degree celsius less will save about 10% on your energy use! In addition, invest in a programmable thermostat which allows you to regulate temperature based on the times you are at home or away. [Manage my Home]

Rent boxes when you have to move

When it's time to move all your worldly belongings, why buy cardboard boxes that need to be recycled (read: high energy use) when you can rent bins for the day and return them. This could actually save you money in the process, but also reduce energy consumption and the need for new materials to make more boxes. [Top Green Moving Tips]

Don't pre-rinse off your dishes

When you rinse your dishes before you put them in the (duh!) dishwasher-- you can be wasting up to 20 gallons of water each load. Plus, you're saving time and the energy used to heat the additional water. That can translate into about $1 a load or over $300 a year [50 Ways to Save money]

Turn your computers off at night

Your computer uses power whether you're using it or not. Instead of leaving it in standby or sleep mode, you can save 40 watt-hours per day by turning it completely off. That adds up to 4 cents a day, or about $14 per year. If you don't want to wait for your computer to start up, set it to turn on automatically a few minutes before you start to work, turn it on and then do something else like tidy your desk. [PC World- Energy]

Turn off the lights

Always turn off incandescent bulbs when you leave a room. Fluorescent bulbs are more affected by the number of times it is switched on and off, so turn them off when you leave a room for 15 minutes or more. You'll save energy on the bulb itself, but also on cooling costs, as lights contribute heat to a room. [FLICK Off!] | [Killa Watt]

Group your errands together

Feel like you spend your whole week trying to catch up with the errands? Take a few moments once a week to make a list of all the errands that need to get done, and see if you can batch them into one trip. Not only will you be saving gasoline, but you might find yourself with much better time-management skills. [Organize your life]