Diy, no robot

Waterproof Floor Stickers
https://s.click.aliexpress.com/e/_9ghdvX

Nothing like having something curious to impress your friends

Here is the list of where to find each gadget
https://s.click.aliexpress.com/e/_9ghdvX
Do it yourself, it is not always necessary to have a robot to make life easier and more enjoyable