But still, adding a mouse-contraption below your keyboard could make it feel like you're using the keyboard to run it while your computer recieves your input as

But still, adding a mouse-contraption below your keyboard could make it feel like you're using the keyboard to run it while your computer recieves your input as mouse signals, so you'll both be happy. (Some brand names to search for are Rollermouse, Mousetrapper, Optapad, andErgoslider.)