I'm trying to think of ideas to take advantage of being a foreigner in Japan. I already run my own school but until I have managers at multiple schools it's not passive income. Something involving royalties is always attractive. For example, one of my hobbies is photography. I'm in a unique position to provide journalistic content for SPAs like Corbis and Getty Images. Another is exporting niche products. There's a guy who exports collector samurai swords and apparently does great business. Back home online grocery stores do great business. The supermarkets aren't doing that here. Any ideas?