I found the best case for your N800 and iGo Stowaway Ultra-Slim Keyboard (Bluetooth).

Case Logic - Compact Portable Hard Drive Case
http://www.caselogic.com/compact_por...?modelid=80400

$20 in Best Buy

Now, its not really the best out there, but you can carry your N800 and iGo keyboard. If you don't have an iGo keyboard, you can store your USB cable, stylus, SD Cards, etc... In order to make your N800 and iGo keyboard fit, you have to place your iGo keyboard backward where the iGo logo is face in. (Note: You should see the back of the iGo keyboard) The N800 will need the sleeve that came with it so it can fit snugged. Place your N800 backward to protect the screen.

Look at the first picture on the left of the link provided and use your imagination to store your N800 and iGo keyboard. If done correctly, you should be able to zip it up without pressuring the N800.

iGo is placed at the top (One elastic band across with fish net)
N800 is placed at the bottom (One elastic band in the middle)

Enjoy!