As I wrote in Day 16: Throw Them Something, Mister, Jimmy's Kids of St. Bernard Parish collects donated beads and Mardi Gras throws. There's another organization that accepts them as well.
ARC of Greater New Orleans, formerly the Association for Retarded Children, provides various services through the metropolitan area, including early intervention, family service, employment and supported living.
Bring your throws to one of the following locations:
925 S. Labarre Road in Metairie
5700 Loyola Avenue in New Orleans
333 Sala Avenue in Westwego