The job was not really an aid but required a repositioning of the handle.
The client has arthritic hands . The handle on the dishwasher had been reduced in height , so that it was little more than a ridge to grip because at right angles to the dishwasher a sliding cupboard opened and would foul a deeper handle.
The solution was to fit a deeper handle off set from the centre of the dishwasher door. This entailed disassembling the door and the fascia to remove the handle and replace it.