Exercise in Awareness

Pick a room that you spend a lot of time in - your office, your kitchen, your living room.

Next, make a list of the objects in that room you touch on a usual basis.  Pens, utensils, counter tops, phones, keyboards, couches, light switches, carpet, etc.

Make a note next to each object in your list with the material that object is made of.  Is it plastic?  Is it wood?  If it's wood, is the wood covered in a poly finish? 
If you'd like, jot down who manufactured this item - was it a factory?  Who works in that factory? Was it Mother Nature?  Was it a craftsperson?

Then take this awareness exercise a step further - what objects do you see in this room?  Paintings, plants, computers, chairs, windows (looking out to what?), lamps, etc.  Note as above what material each of these objects are made of, and where you think these objects, or layers of objects, were manufactured and by whom.  Is your lamp stand plastic?  Where was your drywall made?    And so on.

Total things up and see what materials come up high on your list, and what origins.