I would recommend shredding them after you buy them. "Mint condition" and "no folds" certificates are poor insulators.
The bear and I won't need the quilt until we return to LV to winter there. (Alaska is warm enough in the summer that we don't need the quilt.) I just hope that nobody has stolen the quilt in our absence, but the falling ITIC share price gives me some comfort that nobody will bother. The possibility that someone will steal the quilt lining and try to glue it back together to be passed off as "mint condition" Enron certificates is a worry, though.