The Slide Whistle as recommended in the MORE book.
It is an excellent beginner tool since little air is required to make sound.Tone can be changed by both strength of blow and position of slide.
Blow as long ,loud or soft as you can .
Initiate patterns ,pitch or volume. For eg, make the whistle answer a command , ask a question and use it to say "thankyou"
To be used under adult supervision.
Contains small parts, may be a choking hazard.