I do get a lot of my raw materials from own post consumer trash. But when the weather is good, me and my dear husband go for walks around our neighborhood. I bring a large bag with me and bring home lots of stuff. My raw supplies spend the night outside in the cooler soaking in soapy water and then a few days draining in my spare bathtub.
What amazes me is we do not go for a long walk. It was a mile at the most. We humans can be pigs at times.