cardboard tubes + box = hours of fun! We pieced together TP and paper towel tubes. Used marbles. The kiddo loved it and even still pulls it out to roll the marbles into a dump truck. He wont' let me toss any cardboard tubes now.
Grade Pinch Pots - Wind Chime: ceramic hemispheres hung close together create long body of a fish with -I'm sure- a great sound chime. Could be done with your own clay but also upcycled old tea or espresso cups for this same thing, fish or not.