try searching on search tempest. it is all of craigslist ads but not part of craigslist. type in miles you want to search from your zip and see what pops up.
Easiest way to do it. And if something is out of your comfort zone distance wise think again..... The right roadtrip can be so worth it for the right deal....
Something else that I know has been done is go to local yardsales. It gives you a chance to poke around and see if something is sitting waiting to be grabbed. I will see if I can get a few pictures of what my Aunt's now deceased husband did last year and though what he ran up on is rare it does happen.....
