There is no hard and fast rule as to the documents that you need to take while going for interview. However, you are required to at least take 3-4 copies of your CV as there may be more than two people taking your interview. It makes a good impression that you take your CV giving a cue that you are ever ready for any task.
Carry a copy of your Passport and your Education documents duly attested.
People in the industry of photography, advertising, marketing could also carry their past work that shows your significant contribution. If it is a bulky document you could also carry it in a CD or flash disk.