where can i buy a case for my ipod touch 5G 16 gb?

http://www.case-mate.com/iPod-Touch-5th-Gen-Cases/iPod-Touch-5th-Gen-Cases.asp

Belkin is the only one I've seen that is made just for the 16g iPod 5, (doesn't mean it is the only manufacturer but it's the only company I've seen). If you don't mind the window for the camera you don't have then any of the iPod 5 cases will work. I have seen the Belkin case at Best Buy and on Amazon, but that was a few months ago. Hope this helps, good luck.

Speck Products now makes cases for the 5th Gen Touch.