Color Changing Glue Art Overhead transparencies or acetate Elmer's glue Liquid watercolor Eye/ Medicine droppers how to: 1. Squeeze out a puddle of glue on top of a transparency (laid on newspaper- for tidiness). 2. Drop paint onto your glue puddle. 3. Let it dry overnight. 4. The next day, cut out your transparency. 5. Punch a hole in it and string it with yarn. That's it, super simple and very intriguing!