Half a croissant, on a plate, with a sign in front of it saying '50c'
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Wicked ball

Attach metallic brush to a ball, and add an imbalanced mass rotating inside it to make the ball randomly wobble and jump around to clean surfaces inside a closed space like a room, or elevator.
  [vote for,

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


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