One of the only things I enjoy about taking the subway these days is seeing the defaced ads on the L train. Whether it's random chance, high schoolers or street artists the result is always good.
This is a pro tip, but also a summer tip, take the ferry from Lower Manhattan to Rockaway and spent the day. The beach is great and the area is impossible to gasp that it's 30 min from Manhattan (without traffic) - Eat as many tacos you can, cause it's the best in the state of New York!
Economy Candy is an old-fashioned family owned candy store in the Lower east side. With glorious aisle after aisle of candy stocked as high as the eye can see including innumerable brands you never knew were still in production – its a treat for the eyes as well as the belly. Every time I get inside I'm looking for Willy Wonka.