I agree! I get that they're in the reward list along with cosmetic gear (which I love) to give us variety and avoid giving us a ton of high end materia, but single fireworks aren't even fun really... just a disappointment. I just use them right off to get them out of the way, because storing a handful of fireworks is pointless. If we got them in small stacks, I'd be more inclined to keep some of it around for special occasions, and I'd even be happy to get them.

+1 for rewarding fireworks in small stacks!