The link you provide is not rivets, those are paper fastners. I don't care what trooperbay calls them. He's not making the decisions here. If that is what you are using you need to replace them. I "banned" those paper clips a year ago.
Also, about the elastic and single rivet, I know they are not in the CRL. We can't specify every single detail or you would be reading a novel rather than a CRL. But don't you want to look as accurate as you can?