Zach asked for a robot for Christmas. It only has one job but it's very efficient at what it does. It's a Litter Robot.
We bought it refurbished online and have been using it for about a month now. For the first 2 days our cat refused to use it, opting instead for the the laundry room rug. So we left him in the laundry room, just him and the robot, and within 24 hours he had completely transitioned to the new box.
Here's a video on how it works:
Automatic pet feeder? Check. Automatic litter box? Check. Now all we need is one of these: