This coming weekend, Sept 29 - 30 the International Guild of Miniature Artisans is having it's show in Teaneck, NJ, which is a 15 minute bus ride from Manhattan. The Guild has high standards for certification and the show, in my opinion, is the best regarding the quality of the pieces and the skill of the artists (and the vibe is really good). See full details and directions here:
Here are some pictures from last year's show and examples of what you might find there:
Jamie Carrington, an IGMA Fellow from London, does fantastic small scale dolls. Here are some examples and a link to his site. Jamie Carrington Dolls.
Bonnie Backe is an IGMA Fellow who crafts amazing small scale handwoven pieces of art. You can see more of her work at her site Weevings. Here are some of the pieces from last year's show: