For this pocket knife fob/lanyard, I used a length of gutted camo green paracord and tucked a 1/8" by 2" long misch metal mouse firesteel into the paracord sheath.
I tied a Celtic button knot on one end and worked the firesteel down against it.
I then tied a 17 lead 4 bight turks head knot of a single pass, with round 2mm dark brown leather over the paracord covered firesteel. Added a copper colored bead(from Hobby Lobby) and tied a scaffold/multiple overhand sliding knot to finish.
The pocket knife is a Victorinox Tinker. My previous post with with firesteel fobs/lanyards is linked here.
Here's a couple of the firesteels with a single strand of paracord in a two bight turks head knot, using less than 2 feet of paracord. To be worn as a pendant on a chain, a zipper pull, or added to a key ring.
And one using 3 feet of paracord as a lanyard for a Swiss Army knife...