Dreams featuring toys crawling on someone's head can symbolize feelings of playfulness or a desire for lightheartedness in your life or in your relationship with your wife. Toys often represent childhood, innocence, or aspects of your personality that are carefree. The fact that they are crawling on your wife's head might indicate that you perceive her as someone who is nurturing or playful, or it could reflect your own thoughts about her mental load or responsibilities.

Consider how you feel about the situation in the dream. Are you amused, concerned, or indifferent? This can provide further insight into your emotions and relationship dynamics. It might be helpful to discuss these feelings with your wife to foster communication and understanding in your relationship.