This is a nice little trick and use for an old disposable camera (that I always forget to have developed). It simulated the flash made when a picture is taken. It is very simple and very bright.
I don't know what uses you have for it, but don't flash it into peoples eyes (it hurts)! I think this looks really cool in the dark.
-just for fun
SORRY: I'M NOT A GOOD PHOTOGRAPHER SO I COULDN'T GET A PICTURE OF THE FLASH IN ACTION.
TAKE MY WORD FOR IT: IT'S BRIGHT!
DON'T HURT YOURSELF (OR OTHERS)...I'M NOT LIABLE!
PLEASE RATE AND LEAVE COMMENTS!!!!!!!
Step 1: Materials
-Old disposable camera (0 pictures left)-I used a Kodak (wrapper is ripped off in the picture)
Step 2: Prepare the Camera
Take the camera and locate the flash button. Push this until the indicator light (mine was on the back) turns on. Locate the flasher thing (sorry, I don't know the official name), this is where the light come from, so watch your eyes (and those of others).
Step 3: Create the Flash
Now grasp the camera in your dominant hand. Slam it on the palm/heel of the other hand. It should flash, if you hit it hard enough. THIS COULD HURT IF YOU DO IT WRONG: I"M NOT RESPONSIBLE!
Now go ahead and use it for something, A single camera can be used multiple times.