tinder -
Small dry sticks and finely-divided fibrous matter etc. , used to help light a fire.
Wikipedia
Tinder is easily combustible material used to ignite fires by rudimentary methods. A small fire consisting of tinder is then used to ignite kindling. Anything that can be ignited by a match can be considered tinder; or by more rigorous definition, anything that begins to glow under a shower of sparks.
