there is a facebook group i found via friends for folks in NYC who can help or who need help. i was just added this afternoon, but the group is very active calling for food/blankets/hands who are available. i haven't seen a call for bikes, but i posted to see if they had any interest. 
 someone posted earlier today a call for people with bikes and/or cargo bikes who can carry hot meals and other donated goods like blankets, etc. if anyone's interested/able to help, hit me up off the list and i can add you to the group.

josh.