Webster Hall is a solid venue, and a frequent stop for many great bands on their rise to glory. If you've only got a few nights in the city, chances are a great act will be playing here.
Erie Basin is a really wonderful little shop full of old, creepy and beautiful things, such as Victorian mourning jewelry (some with hair in it), Freemason masks from the 1900's, tiny children's rings from the 1700's, and all kinds of other treasures. It is really as much a museum as it is a store, and all of the items have a haunting and unique aura.
Fav art bookstore in the city (and the world?). Great place for inspiration and reference art, both new and vintage finds. Not very cheap but mostly quite worth it.
From Wally's cafe to Wall.E to a green wall. When you arrive in NYC you immediately mention a difference in concentration when it comes to conversations. Iphone's go always before listening to people. There is nothing to do anything about this anymore but it is a little fact.
I Like to cycle and walk around in the neighborhood and mention this beautiful wall with the 2 oval light spots arisen on it. This magical light spots are constantly popp'n up on all different walls in NYC. Open your eyes: Let's stare at the wall. Just as long as something starts happening.