Social interactions without trash

Trash is borne out of, and is a byproduct of, our desire to control what we experience. This has led to the development of social interactions which necessarily involve the production of trash, especially because of sentiments like complacency, ignorance and carelessness, as well as notions of time. There are many simple and fundamental acts that we perform in which we allow trash to be generated. Take for example going to eat at a fast food restaurant. In that light, I am trying to envision a world, a region, a community, or an interaction without trash. I want your suggestions on situations in which you would think trash could not possibly be generated, but ends up being so. Then I want to take trash out of the picture. Say it wasn't even possible to generate trash - what would that interaction morph into? What changes in behaviour would be required to have that interaction? How is this then a critique of our social constructs? Please send in your thoughts. My wheels are turning, too.