My father isn't exactly anti-tech, but he does like having just the essentials in gadgets and stuff. However he does have to use te compute really often for work and I've heard him complain about his hands getting tired and being uncomfortable with that keyboard. So I'll go with a mechanical one, with brown cherry switches (blues are REALLY loud...). Not really sure of which one, so I'll just go with a sure shot at the Corsair K95. Not like he'll use the fancy RGB lightning, but having programmable keys for shortcuts and even setting the entire keyboard to a fixed background color will probably be useful at one point or another
EDIT: Typo