Renegade Sandy Relief is a direct action grassroots initiative working to assist in relief and rebuilding efforts in the most devastated areas of NYC: http://www.wavesforwater.org/fundraiser/renegade-sandy-relief
Waves For Water has been a hub for various grass roots fundraisers all over the east coast. They have many different organizations listed on their site and have been instrumental in helping people organize: http://www.wavesforwater.org/fundraisers
Food For Sandy-Moms with Hearts and Food started by my neighbor and commercial producer provides 2 hot food trucks twice per week to different communities affected by Sandy:
http://www.indiegogo.com/projects/276012?a=1270273
The Occupy Movement has been doing some incredible things. They can put you to work. A great place to send your money. Check out the site, they can also keep you informed:
http://interoccupy.net/occupysandy/
http://interoccupy.net/occupysandy/
Rockway Rescue Alliance Shore Soup. Feeding people in the Rockaways:
https://www.facebook.com/RockawayRescueAlliance
https://www.paypal.com/us/cgi-bin/webscr?cmd=_flow&SESSION=_XFJRo1zhsv-8z2ibySiQEzsf5R0eVHCxUZTj-9_R4Oi4xEVwtZ9aYWhHUy&dispatch=5885d80a13c0db1f8e263663d3faee8d0b7e678a25d883d0fa72c947f193f8fd
And there are many more wonderful organizations out there. People are amazing.