Nexus 5x Holder with slots for USB-C and Headphone jack

This is a holder I made for the Nexus 5x with slots in the bottom where I glued in the USBC cable and a headphone jack so I can slide in the phone in the car easily and have it hooked up to power and aux in.

I connect it to the following magnetic rotational mount so I can use it landscape or portrait:
http://www.thingiverse.com/thing:685687

That is then connected to a mount that I stick in the cd slot on my Honda Fit. I don't have the files for that mount up yet, but I have seen similar