Some people find it difficult to pick things up and put them down without dropping them because of severe tremors or other difficulties in moving their arms.
This was the case for one of our clients a while back and so we (well, Michael, our very talented mechanical engineer and clinical technologist) made a special mounting system for him.
This mount allows him to put his environmental controller in and out of a mounting cradle without dropping it and without any fiddly clips or brackets. The mount uses magnets to lock the device firmly in place when in use but, with a twist, it will easily release. The client uses this device to control his telephone and can now transfer it between his manual wheelchair and desk or sofa independently.