What is the best/worst you've done when selling at a swap meet?

Like many others here, I often sell stuff of mine to buy stuff for my own projects. We buy parts cars and sell stuff from them, we sometimes buy stashes of parts from some old timer and pack it up to sell at a swap meet.
I love selling stuff.
This guy I know that used to live in a tee pee sometimes sold at swap meets but his grumpy demeanor surely turned off buyers. I tried to show him that smiling, eye contact and saying Hello is better than ignoring people.
I'm not broke but I feel better when I offset the costs of building or upgrading the cars with the sale of stuff that I don't need nor want.
THIS IS NOT A SALES AD. PLEASE DO NOT TURN IT INTO ONE!
I've sold at different car shows and events. Sometimes I've done well, other times it was a waste of time. The worst was when I've sold at the Sacramento Raceway show. People were there primarily to race but they had a swap meet and car show too. I never made more that a couple hundred dollars there.
The best ever was in 2014 at the Mopar Alley show in Fremont Ca. They used to have their show at Ohlone College but had to relocate when the college expanded and built in the spot where they used to hold the show.
I've never had any rare or super valuable stuff. No Shark tooth grilles, Hemi or 6 pack stuff, no 340 parts, Hardly ever any E body or spare Charger stuff either. I am not the guy that occupies 4 spaces and has a crew of helpers.
I'm just a guy that scoured the junkyards, cleared out garages of former enthusiasts and bought cheap A bodies to strip down.
The best day ever was $2850 and a lot of it was $20-$50 stuff. Emblems, arm rests, gauge clusters, interior stuff as well as K members and a few body parts. Other times I've scored between $500-$800.
No matter what, I'm just out there selling stuff that I don't need or that I already have 2 or 3 more of back at home.
I have stuff that was given to me by members of our local Mopar club. Many times, the haul is 90% worthless but sometimes there are some good things in the mix.
What about you?