In my area there are people with farms who have a kiosk at the end of their road where they stock what they have available — eggs, flowers, cheese, pottery, etc. and a suggested price list, plus a secure drop box.

Seems to work out OK for them. Not sure I’d want to try that in a more populated area, but I HAVE also seen neighborhood libraries in urban areas that seem to survive (box at the end of the walk containing books to share; you can take a book and return it to any of the boxes in the area, and are encouraged to add new ones).