One word: Don't. They don't need knitted items. They need food, clothing, and places to live.
Give money. That's what's needed. Remember, it might have been any of us living there in New Orleans. Or it might be some other catastrophe that hit OUR home towns, some day in the future.
Give to the Red Cross or the Salvation Army or whoever you prefer to give to. I'm broke, but I have a home, a family, and a small income. I can afford to give a little. Maybe soon I can afford to give more.
I hope you can too.