I only bought certificates and photocopy of my certificates. I didn't have awards that come in the form of medals and trophies too.
But from my experience right, for registration (before your interview), they already print out the documents (resume/certificates/GPA results) that you uploaded for the uni application. They just want to see the original version for verification purpose. Especially important documents like Olevel Cert and Poly/JC results.. They will look at the serial number at the bottom to ensure its the legit or same one. Cause for mine my serial number for olevel cert happens to be cropped out (the one I uploaded) so the photocopy of such documents its important to bring along the photocopied one.
Erm.. actually apart from the registration one, the rest of the rounds of interview (including the 1-to-1 interview)... they don't really see your portfolio. I went for the group interview (cause mine is Early Childhood). I asked the interviewer if she wants to see our portfolio (example the past work we do) but she say she don't need to see those. Cause she only refers to those documents that are uploaded during the application.
p/s: I actually prepared like alot of things/project that I did during my internship or jobs that are related to the course I applied But it's sad that they didn't want to see
Asked one of my friends (who went for some business interview at SUSS too).. she told me that her interviewer didn't want to see her portfolio.
I don't know if these applies to all the interviewers or not. :/