Who said you just have to buy books when you are in College Street. How about buying sarees? College Street has some of the oldest and most heritage saree houses in Kolkata. You will find Mohini Mohan Kanjilal, Adi Mohini Mohan Kanjilal (both are different, but as far as we get our sarees, who cares!) and Adi Akshoy & Co. You can find all the Bengal specialities in both cotton and silk. Also get your hands on some fine Kanjeevaram silk as well.