Your parents probably warned you against playing with your food. However, there are some times when Japanese custom allows for this, most notably at Summer Festivals. Nagashi Somen is one of those times. Usually Nagashi Somen requires some pretty involved equipment. But now Takara Tomy, the Japanese toymaker, has released the home version of this game.
Lunar New Year is still considered a special time in Japan. Too much tradition is shared between Japan and China to just ignore this time of the year. So Japan has its Haru Matsuri, the Spring Festival, which begins every year around the beginning of February. Haru Matsuri starts with the observance of Setsubun.
Japanese summers are notorious for being hot and sticky. What better way to keep things cool than to organize an event where water and ice factor into almost everything? The Pokemon Company held their annual Pikachu Outbreak, featuring the most popular Pokemon character of all, and gave it a specifically nautical theme.