On https://foodsharing.de, you can sign up to see a map of food items that people want to give away. During the pandemic, these will often be in boxes, either outside, or in buildings' entrances, which you can just go and collect!
And if you want, you can help out in this second layer, as well! I missed this when I first checked out the website, but this wiki is the entry point – you'll want to become a "foodsaver": https://wiki.foodsharing.de/Foodsaver
@blinry in UK we have the "too good to go" app and some foodsharing place but the first is very commercialised (possibly an American import?) and the second mostly deals with distributing food to other charities and service users of Social Services etc and its therefore quite bureaucratic the German initiative is a lot more grassroots and open source...
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