There was an article here (check the archives, june) about a case called maclear zip (on sale at thinkdifferentstore.com)

What does everyone think of this case? I already ordered mine but the developer is still producing the boxes it comes in. I think it's pretty good from the LOOKS of it (emphasis on looks). It's a plastic baggie made of TPU, you put the ipod in and zip it, it has a liner in the zipper so the zipper doesnt scratch the ipod. Also since its slim you can use it with other cases. Like the official one. Ive seen alot of posts about a case called "the wrap" that is similar to this. but from what i can see the wrap is just a think piece of plastic like the one the ipod comes in. It seems like the perfect case, but noone talks about it. The only bad thing is that thinksecretstore said it was going to ship mid june, well it's mid june and the guy that makes em' says he's still producing the boxes, but that the maclear zip's are already done.