Step 1: Materials
Electrical tape - I'll use this to whip the ends of the rope so they don't unravel as we tie. Electrical tape is flexible and meshes well with the rope.
Thimble - This is a 5/16" thimble. You should be able to pick one of these up at any local hardware store.
1.5" diameter wooden ball - I'll be using this at the very end as the core for the final knot. You can get them at any local craft store. The one I have has a flat bottom, but any ball will do.