The 6th graders and I got rained out of a day working on our boat installation sculpture a while back. We decided to try out a faux batik method. Using elmers glue, draw a design on fabric. Let it dry. Using acrylic paint, paint over the entire design with bright colors. Let it dry. Soak the piece in water and then slosh it around a bit to remove all the glue (and whatever paint was on the glue). Here are some successful results: