At the intimate soft song part of a worship set, have one of your artsy youth paint during a song like, The Wonderful Cross. The youth should paint different sins that you face like: lust, lying, stealing, etc. in the shape of a cross. This should be done in the color black. After the cross is finished, the kid should paint a thick red line over the words in the shape of the cross. Then pour water over all of it and smeer it with his or her hand.
This is very powerful and gives a visual so that it involves more than just one of the bodies senses.