I did Farmer's Markets in NH for about three years, mostly to sell my (then) husband's
honey -- he was usually working on the weekends. But I also sold baked goods for a while, until the state cracked down on selling stuff from unlicensed kitchens; some flowers and produce, whatever we had extra from our kitchen garden and gladiolas grown especially for market; and eggs from our
chickens. What I found was that there would have been too much competition for us to sell produce; baked goods did very well while we were allowed to sell them; and nobody ever had enough eggs to last the whole day. Honey was a slow seller, but I almost always managed to sell some of it. Problem is that most people only use small amounts of honey (we had a neighbor who bought two buckets of honey from us every year -- I think that was the only sweetener they used), so even a small jar lasts a long time. The gladiolas did very well the first year we sold them, because we were usually the only ones who had them, but then a couple of the produce growers got the idea and there were more glads than buyers, so we all had to drop our prices. Supply and demand at work, there. The people who had berries always sold out.
So, if I was going to do it again, I would have eggs and berries for sure; probably some flowers; and baked goods if I could legally sell them. There is still plenty of work involved in these items, but it's not quite as bad as having to pick, clean, and chill a whole truck full of greens and other vegetables, pack them, unpack and arrange them, weigh, sell and bag them, and then take what's left home at the end of the day and probably dump most of it into the
chicken coop or pig pen. Oh, and a lady who sold pastured poultry was doing quite well by the last year that I did the market -- it was slow getting started, but she was developing a good client base, I think.
Kathleen