Here is an interesting business category I found in reading Buyology: Truth and Lies About Why We Buy by Martin Lindstrom:
To date Alan Jenkins has shipped more than $3 million worth of Irish soil-sold in 12-ounce plastic bags labeled Official Irish Dirt-to the United States. For Irish immigrants, the soil of their native land has an almost religious significance because, like many Jews, quite a few Irish immigrants pine to be buried in the soil of their homeland. An eighty-seven-year old lawyer in Manhattan, originally from Galway, recently bought $100,000 worth of Irish dirt to fill up his American grave. Another Irishman hailing from County Cork spent $148,000 on a few tons to spread under the New England house he was building. Funeral directors and florists have ordered the topsoil by the ton. Even wholesalers in China have found dirt to be a lucrative business, as Chinese customers have been seduced by the legend of Irish luck.