The rainbow fourth generation iPod nanos now have an even brighter look. Elton John has created a special Swarovski crystal covered version of the music player. The nanos have his signature etched in the bank and each comes loaded with Rocket Man: The Definitive Hits. Best of all, some of the proceeds (12.5 percent) go to the Elton John AIDS Foundation. The 8GB version sells for $565 and the 16GB model is $636.