An anonymous reader writes "My grandfather is a retired electrician whom I've been trying to keep mentally busy. Together we've gotten an Arduino kit and have been working on some simple projects. He does the wiring and I've been writing the code. Recently his arthritis has been getting worse and he's been unable to work with the tiny components that the Arduino projects require. Does anyone have a recommendation for something similar we could work on together that would be easier for someone with his compromised manual dexterity?"