Recycling puzzle

[threemonkeys]

The local suburb's residents association is running its annual inorganic recycling/rubbish collection day today. This year I was actually organized enough to remember and put a bunch of stuff out. There has been a small but steady flow of vehicles cruising around with people slowing down to peruse the piles along the street. I wasn't expecting much of the stuff I put out to be attractive to the collectors and which would therefore get picked up in the final "rubbish" collection. Although there were a couple of items that I thought might be desirable. Thus far everything except that couple of items has been taken away. Go figure.