New York Cares
If the first four organizations didn't sound like a perfect fit, New York Cares is the city's largest volunteer management organizations that can help you find a great cause. NY Cares runs volunteer programs for 1,300 nonprofits and mobilizes 62,000 volunteers. Interested in how it works? First, you create an account online, then you attend an orientation and then choose your project. If you already are involved in an organization and in need of volunteers, NY Cares can help you find people to support your project.
Start the process here.
[photo @nycares]