Summary

Two parts.
Part 1 Holds iPad Mini
Part 2 Mounts to Mirror with tabs and Velcro strips
The two sections get connected with a 1/4" bolt and nut.

Instructions

Print each part.
Connect the Mirror section to your rear view mirror with some Velcro straps. This is designed to fit a Tahoe.
Slide iPad Mini into other part, bolt them together with w 1/4" bolt.
Loosen bolt to adjust horizontally, use the mirror adjustment for additional flexibility.

I made this for use as a Rear view mirror replacement. It streams video from a camera placed on the back windshield. I use it when the back of my truck is full of stuff and I can't see out of the back.

iPad Mini Holder for Car Rear view mirror