I really like the straight line aspect of the Squared off slim Case by helno, http://www.thingiverse.com/thing:1714431 . After my flight instructor saw it he said he would like that for his flight bag but mentioned it needed it to stay at the top of the pouch. This clip allows him to leave it plugged in all day in the flight bag and sit upright in the back seat. It is easier to move from plane to plane throughout the day. I printed a couple of them in Ninjaflex, both semi and full flex.
Use 4 button head screws, 3mm X 20mm. I also drilled and tapped the case holes for the 3mm threads.
Using Simplify3D, 30%, fast honeycomb support on the full flex Ninjaflex.