Below is a link to a post I wrote a few years back about the lovely New Orleans tradition of creating altars on March 19th, St. Joseph, his feast day. This happens in New Orleans because of the large number of Sicilian immigrants that came to New Orleans starting in the 19th century; it was the second largest influx of Sicilian immigration in the 19th century behind New York City. In Sicily, thanks are given to San Giuseppe for preventing a famine in Sicily during the Middle Ages.
Food is obviously central to life here, but the idea of these altars has always seemed so special to me as it uses food to create homemade art and to feed people as the altars are broken down afterward and given out. Many of the altar societies also offer a meal on the day as well.