Pilfer away ! LOL
I swear, I live in the best city in the nation for garden-worthy trash finds. You could furnish a house (and a garden ) in one afternoon combing the alleys here.
Here's one example. I found this in the alley. One of his wings was broken and it was painted all sorts of really garish colors with glitter and stars on it. so I gave him a make-over. Granted, it's whimsical, but it's better than it was !