Great fun balloons, ideal behind a top table at a wedding, or framing a wall, available in any colour combination, with or without prints, with or without tulle/organza, the choices are endless.  Cloud nines are great fun and a great talking point especially if you have the top balloon as a gumball or balloon inside a balloon (how did they do that?). 
Continue the theme by having an individual cloud nine on each of your guests tables, these designs can also be weighted into flowers.