For maximum wow, vary the bursts' sizes and styles. We used sugar cookies, but any flat cookies will do. * Tools and Materials * Royal Icing in White, Red, and Blue * Plastic squeeze bottles or pastry bags * Fireworks Cookies * Toothpicks or skewers 1. Fireworks Cookie How-To 2. Place each colored icing in a separate plastic squeeze bottle; cut a small hole at the tip for w...