Instead of smacking the components together in a sandwich box I decided to design a fancy 3D printed enclosure for my components. Stacking them up in a pyramid fashion like you see in the HTC One for example.

Here's a little render:

As you might be able to tell; the battery pack goes into the bottom slot, hard drive in the middle and the little OpenWRT board (hopefully) slots nicely into those rails in the top compartment.

I just submitted it to a 3D printing press, hoping to have it over here in a day or two.

Dimensions: 

• L: 115mm ( 4.5" )
• W: 75mm ( 3.0" )
• H: 55mm ( 2.2" )