Here's an idea for a fire kit, not necessarily for survival or emergency. Someone want to make an ible out of it ?

The idea here is that a coke can, once  completely dry, could provide both lightweight waterproof storage for tinder and lighting , and  also be an item to help structure the fire layout to provide proper draft and heat containment, . After the can is  dry you could stuff in some matches and cotton lint or vaseline balls, maybe a magneium stick. Maybe an obviously small candle.  Some items may need wrapping.  Then duct tape the hole When it came time to use, open with a knife.
How exactly I would use the can to structure the fire is an open question.