Stop separating the outside in your home from the inside of your house, try to think of your property as all one place. Look at your outdoor area, look at your yard and take inventory of the you have naturally in the space. What has mother nature already provided for you? Hopefully you may have some kind of natural elements that can be the focal point of the new outdoor family area such as a large tree, a hedgerow, a nice slope, or a beautiful view. In urban locations, your yard could be a barren rectangle, with nothing on it but some dirt and weeds, but there could possibly be other qualities you can start with, such as a lovely angle of morning sun, maybe a nice brick wall using one side creating a microclimate, or even an interesting urban view of some kind.