Just request ur university to attest/authenticate photocopies of your transcripts & degree certificate and then also request them to to pack these certified copies in university envelope, they will also seal and stamp it on request. University will charge some nominal amount for this service. No need to send any sort of original documents or degrees.
If the CIC wants them in a Uni cover..then you have no choice,unless ofcourse the Uni doesn't have it's name on such covers,which I assume is unusual. Good Luck!