One of my favourite things was taking volunteers out on a nightly soup run organised by a shelter I used to work for. We would go around central London giving out hot drinks, soup and donated food. Our biggest donor was Pret a Manger, and when you offered a rough sleeper a balsamic drizzled organic avocado & sun ripened pomegranate wrap, they would often looked a bit puzzled and ask, "don't you have ham or cheese mate?"
Quite a lot of the new volunteers would be a bit disgusted by this, claiming that people couldn't be in that much need if they were fussy.