I made a comfy, springy simple headrest using two pieces flat aluminum stock (could use yardsticks), a rectangle, couple bolts, memory foam, and fabric. I bent the aluminum stock (1" x at least 24") around a piece of pvc pipe, drilled holes to match the back seat, bolted them on, then bolted on a piece of rectangle aluminum I had laying around (4" x 8"). Cut a rectangle of memory foam (two inches bigger around than metal), stuffed it into a fabric case and velcroed it on. Shown in picture is a leg band to hold it on just to be sure when traveling. It's way simple, and you can bend it to fit YOU. It springs a little which I like. I have no idea how to attach a picture in this forum.