Liquid Crab Boil is a must. Any brand is great. Just a little amount in any chicken injection really adds lots of flavor to chicken and turkey. I also add some to my fish before I fry it. Lots of different uses if you are willing to experiment.
Abita Beer / NOLA / Covington Brewhouse beers. Good local stuff. Definitely should try to get some Lazy MAgnolia Southern Pecan Brown Ale. My favorite bedsides my homemade.
Jack Millers BBQ sauce- this is some really good stuff when you take 1 part of this and add 1/2 part cheap Concord jelly together. Bring to simmer and add in some meatballs. Then just add tooth picks to eat them with.
Seasonings - most are some sort of copies of Tony Chacherie +/- the salt level.
Smoked meats - Jacobs / Baileys are great for Andouille and Tasso
Local liquor from NOLA. Old New Orleans Rum brand and DP Distillers Oryza Vodka and Rougaroo Rum. The DP distillers stuff is better. Found at Rouses Supermarket for sure.
From the land of Swamp People, South Louisiana