This low-profile lighter contains a hidden survival kit to help prepare you for the unexpected. The cylinder features a removable waterproof cap, and inside is a set of five micro-glowsticks for battery-free illumination and signaling.
There is also a three-foot length of 100lb Kevlar cord which can be used for a wide variety of purposes including creating snares, fishing line, tripwires, alarms, lashing, clothing repair, and many other potential uses.
Besides the included survival kit you can use this lighter to store a wide variety of small items. The internal space is approximately .5 inches by 2 inches.
Note, the lighter contains a real flint which will spark when the spark wheel is turned, but does not contain any fuel. It won't look out of place in almost any environment. Just make sure not to let anyone borrow it if you ever want to see it again.