it's completely fine not to carry any thing at your interview...but I experienced that carrying a little tote bag makes your life easy so you can put all the papers and schedules and information they give you.....people were carrying everything from Wristlets to Burberry totes...mine was just a simple tote you get for free when you buy fragrances....like this one..(i did not have any canvas one) carry a pen or pencil to fill out their surveys etc.