A very cool eco-friendly idea for an electricity-less amplifying speaker for the iPhone4.
I have my doubts as to the sound quality that this little nifty idea can produce. Probably going to sound a tad more hollow than I would have liked.
Still, it is a cool idea of a gadget which I don't mind having one in the living room as a conversation piece.
However, I need to get an iPhone first, that is if I am ever going to get round to doing exactly that.