Use black construction paper and make fireworks using net scrubbies that you use washing your pots and pans or the kind you use for bathing. Mix tempera paint in a tray and add paper towels to make more of a stamp pad type of surface for dipping. The paper towel should be wet not soaking - too much paint and it won't work. Touch the scrubbie to the paper towel and press on paper. Gold tempera really looks spectacular, but any color will do the trick. Use white and red as well and add glitter to the paint. It is a great effect on the black paper.