I know I know! , Rack mounting a Pi? seems kinda ridiculous. But I had occasion recently where I needed a Pi acting as a Wireless Access point controller, and the best place to put it was on the rack. So I Remixed the awesome Sleeve Case for Raspberry Pi B+ by Walter and came up with this.
Its a bit silly, but if you need a Pi acting as a Router on a stick , or a VPN server, or Wifi AP controller, or any number of other things where the inexpensive Pi is a great solution, then this case might be helpful.