Having a person with dementia work with buttoning and unbuttoning, zipping and unzipping, serves a number of meaningful goals. This activity aids maintaining fine motor skills, and it provides a sense of accomplishment. If a person can successfully button and unbutton, he or she can potentially put on their shirt independently.
Backpack with lots of zippers. and latches would be ideal.
A shirt for buttons.
Practice zipping and buttoning with your loved one.