who was it?

Someone, maybe you... gave me an idea about a "BIG SWAP". Where everyone brings clothes and house hold items that they do not want or need anymore someplace like the church or a house (kind of like a huge yard sale, except every thing is free). If I remember right, you arrange everything according to size, item etc and people come and shop/swap. Does this sound familiar to anyone. I can't remember who gave me this idea. I have been asked to be a community liaison for our local neighborhoods. I am looking for ideas that would benefit alot of people and bring people closer. Give me ideas on how to arrange this or pull this off. thanks