There are more and more partial initiatives. Below is an overview with more well-known and less well-known sharing and exchange platforms.
Books:
Bibliotheek
Bookcrossing
Minibibliotheek (zoek in je buurt)
Clothes:
Krijg de kleertjes
Modemevrouwtjes
Gardens:
De groene vinger
Tuintje delen
Food:
Bebubba (app)
Thuisafgehaald
Cars, campers and caravans:
Rent from the neighbors (or share it yourself)
MyWheels
SnappCar
WeGo
Camptoo
GoBoony
Buurauto
Carpooling:
Blablacar/ Samen rijden (ANWB)
Meerijden
Toogethr (app)
Boats:
Barqo
Go boat
We are on a boat
Houseswapping:
HuizenRuil
HomeForExchange
HomeLink
InterVac