Question

if a poet wanted to draw on a theme most people were already familiar with, what could she refer to in her poem?

Answer 1

If a poet wanted to draw upon a theme most people are already familiar with, the poet would need to consider what is universal among humanity.  When we think about what is common to people some possibilities are that we know that everyone is born, everyone must eat, everyone must sleep, and everyone dies.  With that in mind the poet might consider drawing upon birth, hunger, sleep, or death.