Campfire materials, previously called campfire kit, is a camping kit used to place a campfire in any location.
To place it, right click on the ground and select "Build a fire" when the kit is in the player's inventory. The campfire will be placed but will not be on fire.
To light the campfire, the player requires a fuel item, and either a lighter, matches, or a notched wooden plank with a sturdy stick. A campfire kit may be picked up and placed elsewhere, or left on the ground to re-ignite later. It is unnecessary to extinguish the campfire before picking it up. Any items inside the campfire will be placed on the ground if it is picked up, but fuel will be lost.
Starting a fire inside a building will burn the building down. This can be useful for clearing property or devastating to home bases.
Zombies are attracted to the light that fire gives off.
From camping.txt (Project Zomboid directory/media/scripts/)
Type = Normal,
DisplayName = Campfire Materials,
Icon = TZ_CampfireKitWood,
Weight = 2.0,