@BowsacNoodle @Rasterman @MechaSilvio @Paultron Waxed paper and glues are popular for packaging too, but how long and how active in the environement are those waxes and glues themsleves?
We once used milk bottles regularly, glass with a well established exchange/recycle system would be out best bet for replacing plastic food containers. Would probably still need rubber gasketed lids and elastic bands for them though, or rubber seal with screw-on lids depending of the design.