I think so. It's actually very creative. But just reflect for a minute on how many times in TV ads she has seen a milk carton singing and dancing, seen beer cans throw up grafted-on hands in mock frustration, or heard french fries talk to one another. Her behavior may be a case of life imitating pseudo-art.
You might want to ask her casually sometimes when she does this if she would like you to get out some of her dolls to put in her games instead of the bottles, etc. And I would do role-playing games with her—tea parties, going on vacation, trips to the doctor, etc. Have some toys available for such games and play with her; don't just suggest that she play the games by herself. I'm sure she will produce some highly creative scenarios!
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