The Cardboard Radio from Suck UK was designed by Christopher McNicholl. It features a simple card construction that can be recycled when the radio stops functioning.
You can use it to listen to your favorite radio stations while on the go as it works cordless, being powered by four AA batteries. More than that, you can connect your handset with MP3 player function to the cardboard radio through the 3.5-mm jack.
Get one from Suck UK for £25.