This was an unexpected treat ... a Griffin Technology product got picked up in a Time magazine package on green products.

AirCurve may be green in the fact that it uses no electricity to amplify an iPhone's speakers, but the coolness (at least for me) comes more from having witnessed the project as it developed from a paper model (furreal ... 80# white bond straight out of the copier) to a 3D model to an actual product.  AirCurve boosts the iPhone speakers' volume by 10 decibels, enough to make it a perfectly serviceable bedside radio.  IMO, it works best with spoken word stuff, where the frequency range is narrower than music.  It's perfect for listening to the Saturday and Sunday AM NPR broadcasts while I read the paper.

Available lots of different places including Griffin's website, Amazon and bricks-n-mortar (Wal Mart, Best Buy, elsewhere).

Cheers.