The dynamic light system is very handy for caving, being able to toss a torch into a cave to see what's down there is very cool. But torches aren't very bright and I find myself unable to see much.
Flares would provide temporary light when thrown, like a stone or spear, not like a torch. The light would only last a few minutes, 2 - 3, but would be very very intense.
They would be crafted with linen squares, beeswax, and blasting powder to produce an "Unlit Flare". Unlit flares can stack to 16 or 32. When lit, one flare off the stack would turn into a "Lit Flare" and that is what would be thrown.
Bonus points if they scare off wolves and drifters