To dream of a paper bag represents something you don't want to notice. Not wanting to care about results or the outcome of a choice you made. It may also reflect a wish for discretion.
Negatively, you may have asked for advice or help and are having a problem accepting what was given to you.
Example: A young woman dreamed of being handed a crumpled paper bag. In waking life she went to therapy for a problem she had and felt disappointed by the hard truth that the therapist gave her. The crumpled paper bag reflected how discretionary the therapist's advice was and how straightforward it felt.