I used to tinker in robotics, always adding/tweaking parts or trying to figure out how to make him 'smarter', used to enjoy building with my friend's son...he loved it but we don't see each other much anymore so I gave him the robot I was working on, and now he knows what he wants to do with his life - I'm happy I managed to inspire and mean something in one life...anyway I don't have much interest anymore and there is nothing to fill the void