Seated activities use sensory cues with hand-over-hand assistance to sustain attention. Clearer preferences with three choices can be expected within ACL 2.4. The hard part is finding cues that will capture their attention. Tactile cues to different parts of the body, finger foods and drinking from a cup that is half full are the cues that are most apt to gain their attention.
A few people like to carry something around or enjoy sitting down to pet or stroke a stuffed animal, a real animal or a doll.