If you want to be more green, you might also want to consider doing some wood recycling work around your house such as recycling an old gate into an outdoor table. Not only is this sensible, you might end up with a great outdoor table like the one seen in this picture.
The gates at the side of our house succumbed to a big wind storm recently. The cause was ground rot on the posts, but that meant that most of the wood was still in pretty good condition despite being over thirty years old. Instead of throwing it out my wife suggested recycling it to make an outdoor table.