Symbolizes a desire to hide or mask one's true self, often for the purpose of conforming to societal expectations or fitting in with a group. Wearing a cardboard costume in a dream may suggest feelings of insecurity or the need to present a false image to others. This dream highlights the importance of embracing one's authentic self and finding the confidence to be genuine in all aspects of life. Alternatively, it can also represent the temporary or disposable nature of certain relationships or situations, reminding the dreamer to prioritize genuine connections and experiences over superficial ones. Consider the specific design and appearance of the cardboard costume for additional insights into the dream's meaning.