Silicone Skin Back Case
You can get this at this website http://www.sourcingmap.com/red-silicone-skin-back-case-for-ipod-touch-itouch-2nd-generation-p-23593.html for really cheap but i didnt buy mine from online i got it from Walmart. They also come in different colors.
Apple In Ear Headphones with Remote and Mic
These are the best with the 2nd generation ipod touch you can call people using it, best sound quality, and remote works perfect!
You can buy at the apple store
