Being able to hold information within their working memory for a few seconds results in the ability to use information not directly perceivable or stored in their long-term memory. This results in a big jump in the types of sensory cues that they can use.
They can partially hide an image behind another image. They can orientate what they are doing by a simple image.
Slight changes in shades of colours are not noticed, neither are fine spaces.
Bold smells are noticed and may be pleasant or unpleasant to them.