Printable Lighter Assembly Kit is a set of directions for a foldable lighter---plus some in-universe flavor for FIST.
The PDF is one page, cleanly handwritten, and rotated. Adobe Acrobat wanted me to pay to be able to rotate the PDF, so I read it with my body turned at an angle.
The instructions for assembling the lighter are clear and easy to follow, and the flavor that precedes them makes the document a great prop to hand a player.
Overall, this won't affect your game of FIST mechanically, but it's still neat to have. If a PC dies, or if you want to follow some other emotionally charged narrative beat with a bit of bureaucratic comedy, you should absolutely keep this close to hand.