If I were a plastics man I’d build some kind of hybrid cell phone cover / iPod Nano carrier. With the ipod the less than a quarter inch think, you could easily piggyback it onto many phones today… and get you past that whole mp3’s on a cellphone being a user experience nightmare.
A leather case with a pouch of the kangaroo ilk for your iPod would work as well, but i think a plastic phone cover mod that it snaps into would be more streamlined and with many phones today it would still be smaller than a sprintel phone.
Yeah, make that someone, and send me the profits.
