Think of this as a diet plan. You'll get to enjoy professionally-made sushi without packing on extra calories.
10 years ago, Chef Hironori Ikeno made his first miniature sushi as a joke for a customer at his restaurant in Tokyo. He wanted to see how small he could make a proper sushi roll. A single grain of rice serves as the base for each of his creations. They typically take about 5 minutes to make, which is 4 more minutes longer than it usually takes him to make a full-sized roll. You can see more photos of these tasty little wonders at Twisted Sifter.