Don't know how many remember the 3' sparklers you had for the 4th of July, I got a brain fart and decided to make my own flash powder when I was 10 years old, scraped the whole box of the sparklers off, 12 I believe into a small pile, and figured I could light it and have a flash bang, didn't realize it would burn all at once and that fast, bent down to light the small trial I made like a fuse, woof, it went up all at once with a big flash, I couldn't see nothing but a bright light like from a flash bulb for almost an hour after that, learned a lesson.......I think...