My cat plays fetch with the ring off of milk gallons. We have a few of them saved up, because they inevitably disappear under the couch or some shelf.
I am sitting in the lounge chair in my living room and she walks up to me, milk ring in her mouth, drops it at my feet, and looks up expectantly, waiting for me to throw it. I can't say no to her adorableness.
She used to bring it up to my room, jump on my bed, and drop it on my face in the morning. I'm glad she doesn't do that anymore.