Is there a hard keyboard case for the iPad keyboard? Is there a hard case for the Apple wireless keyboard for the iPad?

The case is to make the keyboard safe to transport, like in a backpack or something.
I couldn't find any hard cases, but Waterfield/SFBags makes some nice soft cases you can use for transporting your Apple Bluetooth Keyboard:

(source: sfbags.com)   
(source: sfbags.com)