I used to sew ties onto the top corners of the ones I made for my Mom. Some care homes won't allow the ties as there is a "rule" that you can't restrain a patient. As one of our family was constantly with Mom, they were happy to have what we provided for her.
As a side note, I also incorporated a little pouch pocket that I added into the top binding. It was not stitched down onto the quilt. You might want to add something like that, taking into consideration if the person had a stroke, which hand they would be able to reach across to the pocket.