Here in Copenhagen, little shelves have been added to public trash cans, so you can put your empty bottles/cans there, instead of throwing them in, if you don't

Here in Copenhagen, little shelves have been added to public trash cans, so you can put your empty bottles/cans there, instead of throwing them in, if you don't want to return them. That way, there's no need to rummage through the trash, possibly making a huge mess.