I've found it pretty rare to _not_ find something I'm looking for on Boston Craigslist. As something of an "out there" example, I found ten old tube TVs for my Halloween decorations just a few weeks ago. Also: I got an absolutely great deal on a car through Craigslist about five years ago.

That said, I've definitely had less success on the sales side than I did in years prior, but I can't tell if that's what I'm selling being worth less used these days (desktop computers?), or if Facebook Marketplace is the de-facto place to check.