A couple of examples are shown with my favorite Kiko Tiki beads provided by Schmuckatelli Co.
Here's a short video tutorial that I uploaded for tying the knot.
I used leftover paracord scraps for the cross, probably a foot and a half for the top piece and maybe two feet for the bottom, which was more than was needed.
As an example with the neck knife, I used about a 9 inch length of paracord for the finger lanyard/fob with a 2 inch long loop(that's 4 inches of cord in the loop), one footrope knot(4 inches of cord), and end strands coming out of the knot at 1/2 inch long each(1 inch of cord).
Other examples show the knot used as a flashlight fob with titanium lanyard bead and zipper pull on a BDU pocket organizer.