I recently discovered a "hacker collective" called NYC Resistor. They are a group of people that are passionate about the DIY movement, and every week they host a craft night. Every Thursday night, people come from all over the New York city area to work on their projects together. I must say, it's pretty exciting! Everyone is working on different things, from robots to knitting and everything in between, and they are all happy to share about their projects or help you with your own.
One of my favorite sights the last time I went was this sign someone had tacked up: