That is true. I set an old dresser out and a scrapper came by and took the knobs off.. They were not anything special either, just mismatched/broken pot metal and a couple hardware store pulls.
I have just started putting scraps of wire and such on top of the cans. I had a pile of signal cables somebody scooped up and I am not even sure why. There isn't much copper in them. It is mostly aluminum foil and PVC.
