Balloons taped to a wall to resemble by bubbles. This would be awesome at a bridal shower or another kind of party with a champagne bar. Love this idea! Use pearlescent colors for an adult party and primary colors for a kids' party.
Ribbon and twinkle lights These are colors I like for the ribbons. reds, light blues and yellows. maybe no pink, add light green? break up color with some off-white ribbon. idea is colorful without being full on rainbow.