FLOWmarket is a great, interesting and somewhat confusing concept. They have set up temporary stores all over the world since 2004, selling empty cans and such. Yes, empty cans. Cans with nothing but air inside. But it is what is labeled on these cans, that makes FLOWmarket interesting. Self described as "a store that materializes our immaterial needs" and "next generation luxury".
Put simply, FLOWmarket is designed "from the notion that change happens when we as individuals change our mindset."
Check it and see for yourself.