Praise be to Allah.
In this kind of product the boxes are sealed and it is not known which kind of child’s toy is inside. This is bay’ majhool (selling something sight unseen), which lacks the necessary condition of knowledge of what is being sold, either by sight or by description. Hence it is not permissible to deal with this kind of product where what is being sold is not known, either by sight or by description, because it is a kind of deceptive sale such as was forbidden in the hadeeth of Abu Hurayrah (may Allaah be pleased with him), who narrated that the Prophet (peace and blessings of Allaah be upon him) forbade sales of deception. (Narrated by Muslim, 3/1153)