Sensory information like sight, sounds, taste, smell, touch, deep pressure and vestibular stimulation captures the person's attention. Sensory stimulation activities are used to provide pleasant sensations that keeps the person happily occupied. Use an activity like placing flowers in a vase. The person's attention span will likely only last for about a minute. They will require a prompt to continue a task.
Pictures may be used with the person but they can't be too busy. Just a subject on a pretty bland background may capture the person's attention.
Use sensory information which they have a past history of using. This is where we make use of everything the person has including their obsolete identity. If they used to be an author, have a copy of their published book nearby where they can flip through the pages.