Byttestation
In the picture above is a swap shop (byttestation in Danish) in my local area in Copenhagen. Swap shops are places where one can bring what they are not using/no longer need and leave it for fellow humans to take home, free of charge. One can also take items from these swap shops. Here you can read a bit more about the principles behind this kind of exchange.
My partner and I brought a puzzle there. We enjoyed solving it but we also thought that someone else will enjoy it too. We hope that they will pass it on just as we did. I love the idea behind swap shops.
We didn't take anything from the swap shop as we didn't need anything.