How does the poet use literary devices to discuss the subject of this poem ?

[Fernanda]

Once upon a time
I caught a little rhyme

I set it on the floor
but it ran out the door

I chased it on my bicycle
but it melted into an icicle

I scooped it up in my hat
but it turned into a cat

I caught it by the tail
but it stretched into a whale

I followed it on a boat
but it changed into a goat

When i fed it tin and paper
It became a tall skyscraper

Then it grew into a kite
And flew far out of site..