I saw some cute sunglasses at Target for a dollar per pair. I bought some for the babies to use indoors for a change in perspective. I also bought sunglasses online with UV protection and straps to keep them on for when they are outside. I closely supervised the indoor play so they would not poke their eyes. They had a wonderful time wearing the glasses and seeing how different their playroom looked. They loved seeing each other sporting shades. I bring the glasses out every few days to keep it fresh. It is a great source of amusement for them and their reactions are entertaining for me too.