Personalized Shamrocks White Music Notes Toddler Long Sleeve T-Shirt. A jumble of shamrocks and white music notes is a fun gift design for the Irish and the Irish at heart on St. Patrick's Day and at Celtic festivals. 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.