The trouble about buying gaming gifts for dads is that by the time your kids can afford to buy any of them, most dads may have moved on from gaming. And if the kids are still small, then haven't you got better things to do in your spare time like changing nappies, feeding and bathing them, washing up and spending time with them so they don't grow up to be juvenile delinquents.
I have 2 kids 4 and 2, and whilst I love to game I make sure to only do so occasionally when they are both asleep. Oh well - I suppose I have to dream about getting any tech gifts on Father's Day, or I go out and buy it for myself!