Interesting!
This thread brightened my day! XD I'd have to admit, I'd feel weird asking a stranger for a meal if I read Tarot for them. I would feel weird because I wouldn't want to order something that might cost to much (even if it isn't).
But I would gladly barter for other things! Maybe some home-grown fruits and veggies! Or, read for a little old lady down the street who will make me a blanket and will give it to me after a certain amount of readings. Oh, I'd read for many things!
But, for now, I don't read for money or gifts. Unless, ya know, someone offers. XD But, that hasn't happened yet! Haha!