Collaborative HAND ART project. Could be done with a classroom of students. Great Earth Day project for the classroom. This would be fun to do with children and grandchildren! @ DIY Home Cuteness
Color coffee filter with washable markers and spray with water. The colors all blend together. This is also a great rainy day project, you can let the rain do the work :) Kids love watching through the window as the rain changes their picture, Just don't leave it out there for too long or it'll wash all the color out.