Go to any home improvement store and pick up a big roll of clear window plastic.
No need to unfold that, the roll will be about a foot long. I slice a two and a half inch strip, then unfold that and cut it into pieces. roll the canes up in that. You don't have to make it air tight. It's not an air dry clay. Had canes sitting in it for a few years now and it doesn't react at all. And UNlike saran wrap, it won't leave little wrinkles imbedded into your canes. (Had a customer complain about that once. I stopped using it.)
It's also much easier to remove from a cane. When I repacked mine I had a hell of a time getting the saran wrap OFF. (No wonder someone complained.)
Hope this helps.
And every cane I've made so far can be seen here.