Unable to answer "What can be left here for recycling?" – Les Petits Riens - Spullenhulp (Recycling Bin) – https://osm.org/node/5663175641 via StreetComplete 56.1:

It's at the other side of the roundabout in Paulsen.

Attached photo(s):
https://westnordost.de/p/197906.jpg