The star candle firework is a type of firework that can be used as a ranged weapon, dealing 1 nonlethal damage and 1 fire damage.
Unlike most alchemical weapons, this one can actually be used for sneak attacks, requiring an attack roll and not being a splash weapon. The difficult part is determining what type of damage is dealt by the sneak attack: nonlethal, fire, or a mix of the two?
Best Answer
The Sneak Attack ability says that:
The Star Candle Firework fires a number of projectiles which each
I cannot think of another non-technological weapon, other than a torch that inherently does elemental damage without being enchanted.
I would read the Firework's fire damage similarly to the torch, that it does "one point of nonlethal damage, plus one point of fire damage"; much like, say, a Flaming sword that deals an additional 1d6 fire, the fire is over and above whatever would normally happen.
Therefore, sneak attacking with the firework* would deal additional nonlethal damage. Note that the firework's description fails to mention the type of nonlethal damage it does (B/S/P).
*which sounds awesome, by the way