I visited the sunday market in DC today (otherwise known as the Eastern Market). I enjoyed it, weather was beautiful, they had good food and all sorts of random booths - jams, apple cider, prints, postcards, jewelry, woodwork etc. The only thing I didn't like about it is that there is no parking dedicated whatsoever for it, and most people were parking blocks away in residential areas. I spent 35 minutes looking for a spot. If you are around the area I do suggest checking it out.