The interview takes place so that they can a) check all of the original documents of which you sent copies and b) for them to assess your spoken English proficiency. Given that, the interviewer will ASK YOU for the documents they need/want to see, you will not be handing them 500 documents to prove you're prepared.
My interviewer did not even check my diplomas or my change of name certificate originals. I did not hand them to her, as she did not ask. They will also make small talk about the weather/random stuff in your file (mine asked me where I worked, what I did, and if I had family in Canada, and what their status was, on top of standard stuff, like asking if I have had issues with police or immigration in Canada or anywhere else), and this is to assess your spoken language proficiency.
Take originals of everything you sent copies of, and, if you feel the need to, certified translations of your stamps. Anything else is most likely overkill, but, again, it's your choice