An FM radio transmitter is a project that most fans of building circuits will have attempted at some point in their making career. What at first looks like a complex piece of equipment is, once you start putting one together, an amazingly simple bit of kit. Check out this ultra low-tech FM transmitter that imgur user MISTERALIEN put together using scavenged parts.
The PCB itself is made from a small section of copper tube which was hammered flat and polished, the components were then laid on top of tiny copper squared isolated from the PCB below with slithers of balsa wood. Throw is an old switch from a UPS and a cardboard box case, plug in your iPod and your transmitting!
If you would like to see more photos of the circuit then you can check out the imgur page at http://imgur.com/a/KrZMa