I saw this rather prison-ish looking roadside candy machine in Speyer earlier this year. I thought it was a bit of a buzzkill because it was difficult to see the treats inside because of the bars on it. Candy should be free! Set it freeeeeeeeee! Well, I mean, pay 50 cents for it or whatever, but don't put bars over the candy, man.
I did like this sticker on it: "Feed me. I'm famous."