I love the idea.

I was taught Stone Soup originated during the Depression when hardly anybody had anything and you put on a pot of water to boil with a clean stone in it. Then you'd go to several neighbors and ask if they had a a potato, an onion, a carrot or any other vegetable they could spare. When you had a few vegetables you'd put them in the pot with salt & pepper and cook it all together for soup. Hopefully you had enough to share with your generous neighbors so no one would go hungry. And that's the way I grew up with Stone Soup. I still make it this day with whatever vegetables I have on hand. And, yes, I do share.... :)