To dream of cotton balls represents feelings about using something in your life as a temporary imperfect solution to a problem. Making a problem less serious while not being concerned with fully solving it.
Negatively, may reflect your dislike of having to temporarily change some area of your life that doesn’t perfectly resolve your problems.
Example: A woman dreamed of holding in her hand. In waking life she was thinking of her options to leave her cheating husband. She felt that she could move away to a family members home to temporarily solve her living arrangement problems with her husband and start a new life after.