In Finland almost every single can, and drinks bottle, has a corresponding price printed on it, ranging from €0.10 to €0.25. You can return them at almost any local store and receive cash.
There are hundreds of unemployed/retired/homeless people who scour parks, and the city centers, collecting these discarded containers and recycling them for the money.
The return rate is pretty high, even with the tiny amount of money per-item.