The invention I would like to be created is- New Zealand

This week I am taking a tongue in cheek approach to this topic.

I would love to see a device that you could use in the home and more so around household cleaning. I would like a self cleaning shower. Instead of having to clean the shower box and walls and floors and taps etc, you press a button on a wall device and the shower box automaticlly starts a clean and rinse cycle, necessitating the need for someone having to physically clean the shower.