I'm afraid glass and steel containers are going to be increasingly rare as time goes by.

There are plusses as well- I'm grateful for these tiny, superlightweight, quiet, home-made alcohol stoves (made from aluminum cans) that cost almost nothing, and I remember the days when it was hard to find lightweight, sturdy plastic water bottles that wouldn't leak- now every grocery store and convenience store is full of them... but we are surely losing something as well. Looks like tin-can stoves might become a quaint anachronism.