One way glass containers are on the way out. For many products we by buy, the container cost is more more than the commodity itself.
There are still milkmen in Japan, believe it or not. I don’t use them myself because the milk is so expensive, but they are out there.
Little old men on bicycles or 50cc motorcycles for the most part.
More popular and a common site everywhere is the Yakalut lady, who delivers fresh yogurt drinks (and yogurt) to offices and residences. Mostly young housewives. Some of which are pretty darn cute!