This makes a 3 1/2 inch cross that can be added to a key chain or lanyard, clipped to a backpack, hung in a rear view mirror, and so on.
Paracord- I used four 4 ft strands, but had roughly 20 inches left over, so I suggest using four 3 ft strands instead.
Needle nose pliers
Tape measure or Ruler
[Not Necessary] Key Ring (or whatever you want to use to hang or clip the cross onto)