"I remember when I was little Tatus said my mind was like a sponge. But that doesn't make sense because after a while a sponge gets squeezed out. Some people say a vacuum but vacuum cleaners have to be emptied. I think my mind is like a cage... But not one of those jail cages... More like a bird cage."
-Lily

I like the imagery of her thoughts and ideas fluttering around in a bird cage. :)