There was a free market with tons of clothes and items; I saw many people leaving with trash bags full of clothing.
There were dancing demonstrations.
And, most importantly for my kid, there was a very pleasant woman creating animals out of balloons. Sadly, she seemed to think that a flower balloon he wanted was inappropriate for my son, so he settled for a dog balloon. Maybe she had run out of the other ones. Oh! There was also a prize wheel that had mini first aid kits and bags as prizes, among other things.
You never know what you'll find when you venture into Sunset Park.