In a family without the presence of a culturally idealized father, how is the societal holiday of Father's Day handled?

However the family is defined, whether it’s: grandparent/grandchild, two mommies, single mom, aunt/uncle/niece/nephew, guardian/foster child, complex heterosexual family system, polygamous commune, non-traditional / gender non-conforming queer couple who are biologically male and female, or whatever – how do these families handle Father’s Day?