Personalized Doin' The Needful Toddler Long Sleeve T-Shirt. Just doin' The Needful in happy colorful text is a unique computer tech design with attitude for birthdays and holidays. 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.