Head up to City Park. Go fishing for bass or catfish. Check out the Botanical Gardens and other neat places in the park. Have lunch or dinner at Ralphs.
http://www.neworleanscitypark.com/
http://www.ralphsonthepark.com/
Take the ferry across to Algiers. You can check out the Crown and Anchor English Pub when you get there or just ride it back.
http://www.neworleansonline.com/tool...und/ferry.html
http://www.crownanchorpub.com/