Actually, not just for your iPod and iPhone, the Funkyfonic cassette speaker will work with just about any gadget.
Not quite old school tech for new your new school gadget, the cassette is just a casing for a mini speaker – just plug it into a 3.5mm headphone socket and set the music free. Well, as long as it's loaded with 2x AA battieres.
Price? $22 to you.