DIY case design - need some help

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I have the crazy on digital case right now but i want to make myself a better one, going to add some extra stuff in it:
* keyboard
* build in speakers
* place for a touch pen

right now i need help finding a small and flat key board in the size of the nook color, MAX 1cm bigger on all sizes

EDIT
this could be a nice option
http://www.dealextreme.com/p/80-key-...pc-black-81329

Did you order this one?

no, i don't want to use USB in the end but BT... costs more but, well... wireless
right now a keyboard in on the way, going to try and find some lether cover in a local shop that i can modefy for the nook and add speakers i got from DX before using 2*AAA battery but change it for smaller flat battery

Could you post a couple of your sketches so I can see how you want to modify the case?