If you're looking for something different to do tonight with your sparklers, try making shapes and words.
We went out in the garden on Saturday night and started snapping to make this picture. You need a camera that you can change your settings on, change the frame rate so its capturing slow, I set mine to 1"6, change your f stop to be between 6 and 8. I left the ISO in auto, but you can manually set your ISO between 200 and 600. Stand far enough back to keep the whole scene in shot, get your family/friends to start making the desired shape with their sparklers, press the button to take the photograph and stand very still. Voila, sparkler photographs!