If you need an amplifier for your iPhone and yet you are too happy about the use of plastics and batteries in the device, then the eco-amp could be the way to go! This starts off as a flat piece of card and the user has to fold it at the specific points until it resembles an amp that slides over the iPhone to produce a reasonable level of sound.
Here are some of the details for this interesting amplifier for the iPhone;
Designed for iPhones 4 and 4S. Measures 3.5” long, 2.5” tall, 4” wide when assembled. Packaging made of FSC approved paper and printed with soy-based ink.
Constructed out of Environment® series papers, which are FSC Certified Post Consumer, 100% Post Consumer and Alternative Fiber Papers, Green Seal™ Certified and Made with 100% Green Energy, and Made Carbon Neutral Plus;
Priced at around £5 or $8 per eco-amp pack of two units.