I saw one at hotel a few months back where if you called for an extra pillow or some food, they would send a robot with your order. The robot would go from the

I saw one at hotel a few months back where if you called for an extra pillow or some food, they would send a robot with your order. The robot would go from the front desk, take the elevator, find your room, and trigger the door bell. Besides the novelty I actually think it is genuinely useful.