5-lead x 4-bight ring knot (mat)
folded to decorative lanyard knot button ... simple !
video (no audio)
a 4-bight ring mat naturally forms a quatrefoil shape
simply form a cylinder, or trumpet bell shape,
fold the edge as though turning inside out, but more like folding down a collar and flattening it
it's button day today 16 nov 2023 u.s.a