I recently let her finger paint on our sliding glass door. I laid out newspaper on the floor and used painters tape to keep in in place for easier clean up. and when she was done she really like helping me clean up the window. She had so much fun and it was an exciting no adventure for her. I was a little disappointed with the finger paint and I will use temper paint next time cause the finger paint came out more clear then in color. but H had a blast.