One sister was almost always Artemis. The other, Persephone.  I most often cast myself as Demeter, drawn by the power of growing things, of abundance, and perhaps, a bit of authority over my younger sister. Those archetypes have rolled through all three of our lives in rather fascinating ways. (Though I no longer have any fantasies that I hold any authority over sisters, mythic or otherwise.) Even as fairly young children, we were drawn to those qualities that would lead us through the rest of our lives, metaphorically and even, at times, metaphysically.

While we probably were the only kids in our neighborhood living into that particular set of characters and storylines, we were hardly alone in breathing life into our make-believe. And, I think, we were tapping into a deeply human instinct to make myth come alive through play.

In The Historical Development of Mythology, Campbell writes:

We all know the convention, surely! It is a primary, spontaneous device of childhood: a magical device, by which the world can be transformed from banality to magic in a trice. And its inevitability in childhood is one of those universal characteristics of man that unite us in one family. It is a primary datum, consequently, of the science of myth, which is concerned precisely with the phenomenon of self-induced belief. (p. 36)