Arkon makes a strong and inexpensive mounting system for tablets that can be mounted to tables and wheelchairs. The system costs about $35 and comes with a variety of tablet support legs of different lengths. Unfortunately, the length of the shelf on all of the legs is too small to reliably hold tablets that have been placed in cases.
We’ve created a custom support leg designer that allows you to create your own custom 3d printed support legs.
Learn more here: https://volksswitch.org/index.php/volks-devices/custom-support-legs-for-arkon-mounting-system/