Back in the 80's I lived & worked in the Silicon Valley. I attended the Foothill Flea Market which was a hamfest in all but name. A lot of nice stuff moved through there. I also remember this one gent who may have been living in his van, amidst a dozen or so Icom radios, or at least the boxes for the radios. I think he only owned one set of clothes, which he was wearing. I never worked up the nerve to ask to see any of the Icom radios.
One time I gathered up all the miscellaneous items I had, and set them all out on a workbench that was thrown out from my place of work. I was asking like $10 for a dozen dipped silver mica caps, 'name your price' Variacs, etc. I sold everything including the workbench.
I also remember that same event, where I saw a fellow sneak a milliammeter into his jacket pocket. As he was walking away, I said "What's that in your coat?" He said he didn't know what I was talking about, and I managed to reach in and pull it out. I said "See those letters scratched into the back? That's my callsign" He said he was going to call the cops, and I said he should do that very thing. About that time a couple of guys came up, looking for him, as he had grabbed a couple items from them too. I don't remember much more, other than I did get my meter back.
Actually I think people-watching at gun shows is more fun than at hamfests.