What a great activity for children and their parents. Anything can be a musical instrument – pots and pans, cans of snacks, two sticks found in the backyard, a rake on the ground. Look around, listen, let creativity abound. There are many websites with great ideas for making musical instruments with children if you want something more complex. I like this site.
Once you make your instrument, have a descriptive discussion – how is it played (shaken.struck, blown?), is it loud/quiet, do you sit to play it or could you march with it?
Here’s a picture of one of our recent Young Child 4 graduates with an instrument he made to bring to class a couple of years ago.