There are many activities with autumn leaves but I can't see why it should be restricted to autumn. Here is an activity for any time of the year
Provide stimulation and encourage choices.
These lovely leaves will look great hanging from ceilings, decorating glass windows and walls or made into mobiles for people who spend long periods of time in bed.
Encourage new interests. Promote friendship. Soothe the mind.
Sensory stimulation. Promotion of physical activity.
This is a very soothing and worthwhile activity
Social opportunities and memory stimulation