AfroDJMac put together Fireworks Synth a couple of years ago, basing it on the sound of fireworks on the 4th of July on Long Island, NY:

I put the sample into a granulator synth in Max for Live, and then sampled that with Sampler (and Simpler!) in Ableton. There’s a nice textured pad/keys sound, as well as a dangerously ferocious bass sound.

It’s a free download via the AfroDJMac site, where he’s also got a sale going on his commercial Live Racks.