Decades ago, I had two students, brothers, whose father was from Louisiana. They had a sister who lived in Louisiana who would ship cakes, beads and doubloons, which we shared with our students.
A couple years ago, my Sunday after church food service group decorated and served food for Mardi Gras. I made red beans and rice. I used the recipe that Fundy sent me a few years ago, and people asked where I learned to cook. I just followed the recipe and that recipe is so good. Another person in our group tried to decorate a King Cake, but finding the colored sugars was a challenge. I think she tried to dye her own because she couldn't find the colors in the stores, but it was not 100% as bright as what you see in the photos. She did find babies for the cake. Maybe you can order it online, but she didn't have time for that.
It is a good time to make a batch of red beans and rice for freezer meals. I had around 20 containers from one recipe last year.