Not sure if this is the best place, but I figured I'd start a thread where we could discuss useful gadgets, apps and non-mechanical additions (floor mats, etc.) that we've come across and find incredibly useful...
I'll start off with this bad boy:
[ame="http://www.amazon.com/WizGear-Universal-Magnetic-Swift-SnapTM-Technology/dp/B00PGJWYJ0/ref=sr_1_1?ie=UTF8&qid=1445045914&sr=8-1&keywords=magnet+car+phone+holder"]Amazon.com: Car Mount, WizGear™ Universal Air Vent Magnetic Car Mount Holder, for Cell Phones and Mini Tablets with Fast Swift-SnapTM Technology, Magnetic Cell Phone Mount: Cell Phones & Accessories[/ame]
I ordered two of these for family members and after seeing this thing firsthand had to splurge on one for myself... There are a number of different magnet based phone holders out there but this one is probably the best in the business (and very affordable / cheap at that).