Norse myths.........Baldr and Odin.......skull and bones bozos everywhere................Thor's hammer.....Mjollnir............Disney, Marvel...........and Star Wars........STARbucks coffee......

n religion and culture[edit]

As the simplest nontrivial knot, the trefoil is a common motif in iconography and the visual arts. For example, the common form of the triquetra symbol is a trefoil, as are some versions of the Germanic Valknut.

Trefoil knots
An ancient Norse Mjöllnirpendant with trefoils  A simple triquetra symbol  A tightly-knotted triquetra  The Germanic Valknut