A good resource for permanent and seasonal flea, farmer, and craft markets in New York is Markets of New York City: A Guide to the Best Artisan, Farmer, Food and Flea Markets by Karen E. Seiger. They sell it in select bookstores and also at Anthropologie. http://www.littlebookroom.com/marketsofnyc.html
Um THIS is awesome. You'd have to literally drag me outta here.