Glass, Paper, and Aluminum. Startups working to bring these back will grow well over the next decade.
From what I know, glass has no drawbacks other than fragility.
Also, glass is heavy, so impractical for many uses. But yes seems largely inert unless you expose it to some weird fluorides (Things I won't work with series).
Beeswax probably melts too easily to be used for hot liquids but I bet it would do the trick with "moist" things if not full-on liquids.
Bonus, greater demand for beeswax = cheaper honey and more bees around! :)