A good place to go look for suppliers is the reference department in your library. Ask for a book called Thomas Register and look magnet suppliers. Another good company that has a large assortment of magnets is Edmond Scientific and a company called Magnet Sales & Manufacturing, 11250 Playa Ct., Culver City, California 90230. I like getting catalogs and info to help find different sources for experimenting.

There are many types of magnets available some can be quite expensive. Maybe you can find some broken pickups in your local music store to experiment with. If you have a good working pickup, leave it alone. It may not be worth anything now but in later years it could be quite collectible.