Guests throw darts at balloons with paint inside. You keep the art. :) This is such a fun Idea. You choose the colors and the size to coordinate with your style - might be more enduring than having a fingerprint tree in your house forever.
Every girl gets a key & tries to see if she holds the key. Nice alternative to the traditional bouquet toss. Option instead of the traditional Bouquet Toss. Every Bridesmaid gets a key and gets to see is she has the key to open it.