Signs which indicate a wet floor are often not seen until after one has tripped over them or slipped in the liquid they are warning about.
Today’s invention is therefore a ‘wet floor’ sign made of spongy foam.
When there has been a spillage, one or more of these cones dropped on it will soak up the mess and can be wrung out later over a bucket.
The softness of the material means that even if you stumble across the sign, it won’t itself cause an injury.