I recently quit smoking, and have been using Thursday Plantation Tea Tree Australian Chewing Sticks to help. Basically, they're flavored tooth picks. They are Birchwood impregnated with tea-tree oils, which got me thinking, "How flammable are they?" Well, VERY. I shaved a few down with a knife and sparked the pile with my nanostriker -- it went up like a blaze. Also, when you light one of them on fire, they hold their flame like a candle (regular toothpicks just goe out). Good to know.
