Which activities I can do wid my 2 n half month old baby for development of brain?

at 2 months of age, you can start playing basic peekaboo games with your baby. you can also start reading board books and showing the images to your little one. your baby does not really need too many games or toys at this age. but you can use a few rattles or simple toys that make some sound, or have a light. you can also darken the room and use a torch to shine light on the ceiling. your baby will love following the light.