Search instructables for hard disk tesla turbine. That is a cool thing to do with a dead hard drive (if you have access to a workshop).
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You can remove the platters, rings, and other bit and configure them into a wind chime. You may need a few dead drives though.
I think I saw that over at Make awhile back.
You can take the magnets out and have fun with those. They are very very strong so be careful.