If you are having an outdoor wedding, there are so many wonderful things you can do just the mere environment around you.  For example hanging items on trees around you is a great way to introduce color and personalization. I just adore this picture of handing pictures. You can include pictures of you dating, your family throughout the years. If you want to step it up a notch, have a Polaroid camera around so guest can take their pictures, add a message to the bottom and insert them in the frame.  It is a great way to keep them excited and entertained during your cocktail hour.

Photo Source: Celebrations at Home