Psyclops introduces PSYCLOPS’ silicone sleeves for the iPod Nano 4G with colorful eye-catching appearance. The stylish sleeves fit perfectly around your iPod nano with protection. Each sleeve contains a secret code that let users to unlocks access to the interactive online music and dance experience. I like the six one-eyed characters sleeves which make give my nano a cool and fun look. They are available for $19.99.