Mirth market fills water balloons with paint, attaches to a board and shoots darts at them for a really neat effect. You could also throw the balloons at the board for more of a firework look.
Good for ages 10 and up.
Get the instructions here:
http://mirthmarket.blogspot.com/2012/06/water-balloon-dart-painting.html?m=1
Growing a jeweled rose has the hid throw the balloons for a less controlled effect.
Get the instructions here:
http://www.growingajeweledrose.com/2013/05/paint-play.html
Let's lasso the moon fills the balloons with water, rolls them in paint and then rolls them onto the paper.
Get the instructions here:
http://letslassothemoon.com/2014/06/26/water-balloon-painting-outdoor-summer-art-activity/
Hello wonderful uses darts as well, but places her balloons in the center.
Get the instructions here:
http://www.hellowonderful.co/post/balloon-dart-painting-with-kids