People in ancient Greece loved music, which they thought was a way of creating order out of chaos – you could make random rocks into beautiful buildings, you could make random movement into athletics, and you could make random noise into music.
You can make a lyre like this one with a coat hanger, rubber bands (or yarn) and a metal bowl. Really the strings should run over the top of the bowl, so that the bowl will work as a resonator to make the music sound louder when you pluck the strings. This student painted the inside of the bowl to look like a turtle shell, as in the story of Hermes making the first lyre out of a turtle shell. Find out more about Greek music.
Ancient Greece!: 40 Hands-On Activities to Experience This Wondrous Age (Kaleidoscope Kids), by Avery Hart, Paul Mantell, and Michael P. Kline (1999). Gives ideas to get kids thinking, rather than step-by-step instructions.