Personalized You Make Miso Happy Toddler Long Sleeve T-Shirt. You Make Miso Happy! A cute kawaii bowl of miso soup is as happy as can be, all because of you! A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.