Today was かっちん玉祭 (Katchin Ball Festival) at Rokusho Shrine in Nagoya. Katchin ball candy is a lucky candy made only for this festival.
It's just hard candy wrapped around a bamboo stick, but it is said to help you have a safe childbirth, to raise children, and, for safe measure, to ward off evil. I think it can also help your kid get diabetes. The small ones are only 200 yen, but if you want to go really crazy, you can spend 1000 yen on the big ones. The candy is said to look like an umbilical cord, so think about that while you're sucking on it.