Personalized Trombone Teacher Gifts For Kids Infant Dress. My Mommy is the Worlds Best Trombone Teacher Infant Dress - Mauve with Speckles has a worlds best occupation logo for the son or daughter whose Mom is a Trombone Teacher. Fun Trombone Teacher baby shower gift idea. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!