Developed this support due to my need, because I wanted to have something to support my tablet to watch videos in a convenient position without holding it, and he could carry it easily to where it was. Therefore, it would have reduced dimensions.
Hence created this support, based on a cassette box. I made some adjustments in order to position the tablet in the desired angle, both for watching videos, how to enter.
To position the inclination to watch videos, adjusts the moving part, so as to match the latch into hole on base, and then moves to lock this hole. Thus, the part that supports the tablet is fixed.
I took the box to include an adaptation to save a headset ear, which is located on the bottom base of the box.
To store the headset in the box that has four pins internally, initially set up the two earphones in a recess, and then wraps the wire in these four pins. The photos illustrate how to do this.
So in addition to being able to watch videos on the tablet resting in the cradle, you can also enter by simply leaning over the cap, and also store the headset in a practical way.

For those who want to contact me, I leave my email is available, which is isarts3d@gmail.com

The entire Mobile Holder for Tablet is composed of three parts. Box, lid and latch.
The files are in stl format. Those who wish can resize it according to your need.