Penny whistle
In my memory, the penny whistle is associated with the wave of Irish music that hit North America in the sixties. Here's The Mason's Apron, a reel played on the tin whistle.
It was played by the Clancy Brothers and Tommy Makem to accompany their immensely popular Irish traditional songs.
Tin whistles, as they are also called, can be found in South Africa too, and other parts of the world as well.