If you are using cleaning robot like iRobot, you might be interested in this evolved design “TODY”. Inspired by an octopus, this robot has four arms, each containing 22 steam nozzles and 29 vacuum nozzles. Vacuum and steam nozzles connect to the water tank and dust bag through channels. Using its 4 arms, it can climb, move and hang to reach areas like seats, curtains, windows and more. Not sure how you like this concept. I am happy it might clean my sofa, but can’t stand the idea it will climb to my bed and do some cleaning after all its work on the floor.