Personification:
A figure of speech in which the author presents or describes concepts, animals, or inanimate objects by endowing them with human attributes.

Example:
Two Sunflowers
"Ah, William, we're weary of weather,"
said the sunflowers, shining with dew.
"Our traveling habits have tired us.
Can you give us a room with a view?"

They arranged themselves at the window
and counted the steps of the sun,
and they both took root in the carpet
where the topaz tortoises run.
-William Blake

Explanation:

This entire poem is an example of personification. The purpose of this is to give the reader a vivid description  of something. In this case, the personification gives the poem a whimsical and lighthearted tone. This is Blake's main goal. It also gives the poem an edge, making it different than normal poems, that are dull and boring.