This is a stand that can be customized for any tablet or phone or book shaped thing. It collapses for portability and has many support angles from 45 to 90 degrees. The length of the stand is determined from the height of the tablet, or you can extend its length beyond the minimum to increase the number of angle options.

1. Configure the parameters within the customizer to fit your tablet or phone or device.
2. Start by printing the lid.
3. Now go back to customizer and create a few "CalibrationRest" STL's using various values for the Calibration parameter. Print out the STL's and see which attaches snuggly to your lid. Now you know which calibration value to use.
4. Now you know your calibration value, go back to the customizer and create the "Rest"

I've added a few patterns that can be applied to the lid so you can quickly distinguish between stands for your different devices.

The STLs included here are for a Nexus7 with a calibration value of -1.