Cheap Jack's has plenty of interesting vintage picks, with a great assortment of dresses from different decades. I recently bought a plaid dress here from the 70s, which is reminiscent of picks from Alexander McQueen's current collection. I also have found great dresses with bold graphic prints from the 60s. I generally like stumbling upon something in lieu of searching for a specific item. Also, for vintage accessories that provide design inspiration, I usually walk among the flea markets and vintage shops in the East Village.