Your child will show you what kind of toys interests him the most. If it is completely blind, offer him various sound toys (e.g. rattles) and toys with vibration. Preferably as many toys possible made of natural materials (wood) and the natural materials themselves, from the environment (rice, pasta, beans, earth, grass, sand, water, etc.). Often such materials can be more stimulating to a child than expensive toys. If a child has remaining eyesight make sure that he also has toys of clear colours and shapes, and objects of daily use (a disc that shines light, Christmas decorations, shiny cellophane are very stimulative to observe, rustle and play with).