This is the first time I'm entering for a grabcad challenge :)
Here my idea for the casing,
I choose a round shape and laid the LED in 4 quadrants to give the device a uniform look at and given orientation of position.
And the way the slots are postitioned in the top cover the whole casing can be assembled using a thread or snap fit mechanism.This will help easily disassemble the device.
The power LED will be closer to the power button.
Rest of the LED position I haven't clearly decided yet.
And also grooves will be added to the top surface that will help to grasp the top surface.
Top surface consists of two surface textures. Shiny and matte surface this is used to bring detail to the design.
Please feel free to add your comments and critics, because the design is in it early stages.