This would be a one dangerous gadget, to automate cleaning of elevators and closed spaces, where abrading surfaces is not a problem.
When activated, the ball covered in long metallic fur jumps around with force, brushing off and polishing the surfaces inside the closed space.
No people should be around, or inside the space when the ball is on.-- Inyuki, Nov 12 2016 You could make a plus-size version, perhaps 8 feet diameter, for cleaning streets and underground car-parks.-- pocmloc, Nov 12 2016 What's the power source ?-- 8th of 7, Nov 12 2016 [8th of 7], well, I was thinking, what about aluminium, water and caustic soda?-- Inyuki, Nov 12 2016 Do not taunt happy-fun-ball.-- st3f, Nov 12 2016 May it also possess some kind of suction and ejection holes, which puts it into a rapid rotation mode, while filtering the particulates suspended in the air.-- Inyuki, Nov 12 2016 Is this ball meant to be:
(a) Wicked - evil or sinister (b) Wicked - very good or (c) Wicked - having one or more wicks?-- MaxwellBuchanan, Nov 12 2016 It does not need to be wicked. It could be covered with long, soft bristles. You could take several in the shower with you. In fact, several are in the shower, waiting for you. Several dozen.-- bungston, Nov 13 2016 With suction and ejection holes.-- bungston, Nov 13 2016 Is that [MB], or the cleaner balls ?-- 8th of 7, Nov 13 2016 The cleaner balls are after you come out of the shower.-- pocmloc, Nov 13 2016 random, halfbakery