Keyboards, drums, flutes, hand percussion.
assitant
Sorry, I didn’t understand what you asked.  I only know what to recommend for infants, but I didn’t know you were looking for an adult-level instrument.
assistant
What are good musical instruments for babies?
user
What I know about babies is that most are born with the innate ability to hear, and some parents give their children instruments to help them develop that skill.  I know that piano keys are a very popular option for infants, but I haven’t noticed any particular advantages for that instrument compared to others.
assistant
What kind of instruments?
user