I was ordering some electronic parts from Jameco recently and I notice they now carry an inexpensive Raspberry Pi case, so I ordered one. The case is made by Bud Industries. It is a simple design with only two (identical) plastic pieces that go together. It's a little big, but has the benefit of allowing lots of ventilation and it will probably have room for some of the available expansion boards or a ribbon cable connector to the GPIO pins.
|Raspberry Pi Case|
|100 TTL Chips|