I used to work in an R&D type environment as a mobile developer. Once in a while, people would go into a room nearby to test bread for the stores. Of course, they got whole loaves but only needed to taste a little, so I got free bread. Didn't have a big enough freezer at the time though, so I couldn't get as much as I wanted to.

And I used to live with an Indonesian lady (student housing, but she was in her 40's, I think she worked for the embassy), she had a friend or relative that had a restaurant and would sometimes come home with foodstuffs like a bag of cooked chicken or fish rolls.