
I first tied it around a magic marker, making 3 passes, then slid it off and gradually tightened it around a 3/4" wooden ball. It's attached to my Victorinox Tinker with a multiple overhand sliding knot/scaffold knot, for use as a lanyard/fob.
And another one tied with paracord, with a 1.25" foam ball core, used as a key ring fob...


And a YouTube video showing how to tie the multiple overhand sliding knot/scaffold knot, for attachment.