Personification is a poetic device where animals, plants or even inanimate objects, are given human qualities – resulting in a poem full of imagery and description.
Consider the first stanza of Jackie Kay's poem Way Down below in the Streets of Paris:
I spied a small lonely boy.
I was his beautiful red balloon,
from morning through to noon,
In this example, the poet is the red balloon, and the poem continues by describing the boy and the poet (as the balloon) sharing a walk through Parisian streets.