I LOVE THIS IDEA-Worth reading- this sweet gal completed 38 "random acts of kindness" on her birthday to celebrate her 38th birthday. There are a ton of great ideas on here and you can't read without getting a little teary-eyed and wanting to do the same thing.
Sparklers! HOW TO MAKE SPARKLER MESSAGES *Use a tripod
*Set camera mode to M (manual)
*Set f/stop to f5.6
*Set shutter speed to 4" (4 seconds) or slower (make the shutter speed faster for more defined words)
*Set white balance to Tungsten
*Make sure everyone writes their letters backwards!