I have a tendency to take a whole bunch of firework photos every year on the 4th that inevitably end up in a file to never be seen again. This year I decided to try using them as light textures over other photos taken on the 4th. Here were the results:
If you have photoshop and you want to try this, it's easy as pie:
1. Open the photo you want to edit and a photo of fireworks in photoshop.
2. Use the drag tool to drag the firework photo on top of the photo you want to edit.
3. In the layers menu, set the blend mode of the firework photo to "screen".