What to know about what you don’t know you know. #1: Intuition is very efficient—if you don't overthink it.
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I would suggest trying to integrate these objects in his play. He could create stories or play scenarios where these objects becomes props.Or, he could take photos of them and write a book about his objects and why they are important to him. He holds them because they hold importance and meaning and he may be open to sharing the story the objects hold.
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