Since it worked so well for VR games I figured it would also be useful and improve the gaming experience on standard mobile games as well. So I started searching for a PS3 Dual Schock Android Mount on Thingiverse and my search was rewarded with this model http://www.thingiverse.com/thing:508838
In researching a game pad to use with my Dive VR headset I learned a PS3 Dual Shock controller could be used with an Android phone using a USB OTG adapter. From what I've read it may be possible to use the PS3 controller wirelessly, using bluetooth, but this requires a rooted phone and I'm not ready to go there yet. Once I had my PS3 controller plugged into my phone all I had to do was push the PS button to link the two and use the game pad with my VR headset.
I was able to take the stl file from Thingiverse to the library to have the parts printed. I only needed to add a short 5" piece of allthread, a few hex nuts and a 1-1/2" bolt to assemble the mount. I also modified the mount by drilling a hole for the micro USB connection to the controller.