Xylophone
The Rip Co. Xylophone is a Toddler skill object in The Sims 2 and The Sims 3. In The Sims 2, it builds a toddler's Creativity skill, while in The Sims 3, it teaches toddlers the Guitar skill.
In The Sims 3, it will not raise a Toddler Sim's Guitar skill any higher than three points, and those points will not be visible until the Sim starts skilling in Guitar as a Child or older life stage.