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@MakersHour As a teacher, I once was about to do the the magnet-and-iron-dust-on-paper experiment with my class, but discovered too late that we didn't have a magnet! What we did have, though, was a copper coil, some rusty nails, and a battery. I put the nails inside the coil, connected the battery and got the nails *just* magnetised enough to do the experiment and show the magnetic patterns. I made a magnet.