Kids can cut different sized dowels, or colored pvc pipe and string together using colorful yarn. Use handsaws (it's not as dangerous as it sounds!) and have helpers. You can pre-paint the dowels. Put a notch in one end of 'chime' to tie yarn to suspend from a horizontal dowel. Loop a hanger yarn.
Have a fan to test spacing and hanging of 'chime' rods.
Write keywords or verse phrases on the 'chimes'.