Here's a simple idea to make a Mt. Fuji theme bento. Simply shape the rice in the bento box like a mountain. Sprinkle with rice sprinkles or ao-nori("blue seaweed" powder) for the mountain green. Cut a slice of cheese to make the snow covered cap. Add other "okazu" like sausages, omelet, hamburger, cherry tomatoes, etc. Your kids will be so excited when they open the cover and the other kids will be jealous. So simple and cute.