Version 2 / remix of my original car dash phone holder. This is a cheap upgrade for GPS/Navigation, music, etc. When my phone is connected to the Bluetooth dongle, the stock screen is useless (AUX). So, I designed this to use the space effectively.

I picked up the PowerBot PB1032 Wireless Charger on Amazon for $6. It's slim, cheap, and easy to find. I'm sure you could find it (or another brand of the same type) for even cheaper on eBay.

The charger mount is a tight fit. You may need to use a needle file to get it to snap in. The phone mount section is designed for a Samsung Galaxy S6 with a Spigen Slim Armor case (but you can modify it for your own situation, below). The micro USB cable feeds through a hole at the side. I've got it plugged into the 12V cigarette lighter port w/adapter. As with the original, this exploits a thin gap between the stereo and bezel as a mount point. No screws or anything required - friction fit only. Stock stereo in a 2008 Subaru Impreza.

Here's the Tinkercad link so you can modify for your own setup.

EDIT 20160408: clarified details

EDIT 20160411: Added v2.2 which has a cutout for a stereo button that was getting pushed (at the expense of tightness of fit). You may have to tinker with v2.1 yourself depending on your own stereo setup.