Not sure if anyone's thought of this or if you guys across the pond will know what I'm on about but Clipper lighters have a removable flint that weighs under 2 grams and works great for igniting gas stoves or even maya dust, cotton wool etc. if you practice.
They're available in most newsagents in the UK and I've found them on a few American websites, they've got a cult following over here with some limited edition ones selling for hundreds of pounds even though you can get them for less than a quid.
