Looks like Amazon picked up the buffer box [1] idea. Such a shame Google bought them and shut them down, it had such potential.
>There are 3,000 Packstation machines in Germany[1] and 90 percent of the people living in Germany were within ten minutes of a DHL Packstation.[2]
There are also Paketboxen, which are smaller installations for residential areas. The whole system works pretty well for me. The one big downside is, that it only works with DHL/Deutsche Post parcel. They are the dominant player here, but sometimes delivery by them is not available.
[1]: https://www.amazon.com/b/ref=amb_link_366591722_2?_encoding=UTF8&node=6442600011