My daughters school are asking for junk for making into musical instruments. The list provided included old bike wheels! (of which I had a pair cluttering up the garage).
My mind boggles as to how to make musical instruments from bike wheels (especially bearing in mind health and safety considerations). I know you can vary the spoke tensions to get different picth when you pluck the spokes, but I'm not sure how effective or 5 year old friendly this is.