Were there ever a poetry magazine dedicated to my way of operating, this is it. I've yet to even read anything from its current, first issue, but their submission guidelines begin with this:
"Give us your poems made up of lines from newspaper articles, instruction booklets, dictionaries, toothpaste boxes, biographies, Craigslist posts, speeches, other poems and any other text-based source. Only found poems will be considered for publication; original poems, regardless of quality, will not be accepted."
What's great is that they have an entire list of writing prompts for those of us who've never done this, or a need a new source.
See for yourself here.