Well, everyday I carry my notebook and my tablet and It was tedious have to carry 2 seperate things, so I hacked my notebook. The size is perfect for my galaxy tab 7'' android tablet.
This is the final photos since I don't have step by step. But i'll teel u guys how to do it:
1.See how much height the tablet gonna give to the notebook.
2. Add the extra height to spine and bend it (reinforce the new larger spine).
3. Fix the case to tablet in the space that have left with hot glue (for example).
4. Let it dry.