OLYMPUS DIGITAL CAMERAA great tutorial from Sci-Toys shows you step by step directions to build yourself a radio in 10 minutes. You will need a ferrite loop antenna coil, a variable capacitor, a germanium diode, a piezoelectric earphone, 2 alligator jumper wires, 50 to 100 feet of stranded insulated wire and a block of wood. In the tutorial they mention other place you may be able to find these supplies for free.