I like this concept: “Just press and never run out”. It’s the Amazon Dash Button: http://amazon.com/… – intended to be stuck onto appliances, basically retrofitting ones that don’t have them built in (in the future). Pressing a button orders refills of products, just like Amazon one click ordering online.
Also read this Fortune.com article about how this fits into their overview vision for Internet of Things (IoT) at Amazon: http://fortune.com/…
What would you put a button on? Scary or useful?