I found a pretty good cover for the jetBook:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=380192216903
I slightly modified mine (I got rid of the pocket) to use it backwards from the intended way...
It is almost exactly the same size at the jetbook when closed. You can see in my photos that the zero button and the back button can be covered up, but pressing the strap over the button works fine. It can be bent around the back ok, but there is a bit of a crinkly sound around the spine area when doing it so not sure what is inside the case. It seems firm enough around the LCD though. The clasp is a magnet.