Not really fireworks. Put 100 dots on the screen. Watch them get turned into an animation. (See notes below for how it works.) You can then save it in the cloud gallery. UPDATE: you can now save on mobile devices. NOTE: there are occasional glitches with the cloud variables, which can affect how things look in the gallery. Only the last eight animations are stored, and only one per Scratcher. It won't save unless you are logged in with Scratcher (as opposed to New Scratcher) status.
Well naturally all the credit goes to https://scratch.mit.edu/users/PutneyCat
