Found a length of copper pipe, and I know where some more, larger ones are. Can't go snag those until it gets dark and most of the vehicle traffic is off the roads nearby, so as not to be seen. This was just lying in the pavement though.
Every time I find copper scrap, big enough aluminium bits to be worth having, or lead, be it roof sheeting, car wheel weights, leaded glass windows, car batteries (a juicy find, as much of the weight is in the form of the sulfuric acid) etc. I take it and save it, until I have built up enough to go and trade in for scrap fees.
Copper especially, is worth quite good money at the moment, last time I took just a few kilos in to scrap, I ended up making over 25 quid. Can't remember the weight or exact profit, but it was enough to get a macdonalds, a bottle of codeine linctus and an 8th. I was quite pleased with my results that day, for just the effort needed to walk to the scrap yard, maybe half an hour to three quarters of an hours work in total before putting my feet up, stretching out with a bong and a beer, and relaxing for the rest of the day