[IfOnlyYouKnew]

25 cents deposits on cans and bottles did wonders in Germany. You can leave them anywhere in the city and they'll be gone within five minutes. This also turned out to be a surprisingly effective, although somewhat sad, wealth redistribution scheme.

It's unfortunately not realistic to do for every kind of wrapper. Although maybe a weight-based rough measurement might work: I. e. a cents/gram of packaging, and your recycling is spot-checked for contamination. It seems slightly too convoluted, invasive, and draconian even for me, a German green. But might be a possible application of AI ("estimate the number of product wrappings in this heap").

[matthewowen]

States in the USA have been doing this for years too. 10 cents for bottles and cans in California, and you just don't really see them on the street for this reason. What you do see is... everything else.

[rwmurrayVT]

Part of the issue is the people collecting the 10 cent bottles have dumped out the rest of the trash in a hunt for 10c and a possible meal.

[cies]

10ct on cigarette buds!