I wanted to learn how to make electric guitar pickups, specifically so I could replace the pickups on an electric ukulele I have for which I can find no replacement product. But I didn't want to start out tearing my working instrument apart, so I made a couple of instruments out of parts lying around the house to test the theory. Here are videos of them accompanied by some stuff I recorded with them. They aren't great but the pickups worked. In fact the "Redneck Beam Katana" picks up radio stations too, not sure how that works but if it is plugged into an amp and held at the right angle, you can hear a radio station coming in through the amp.