He uses it for naps. (see here)
I kept it for about a week but only got half way through.
He needs it and I gave it back to him yesterday.
"If you are an adult child, you may feel that you are losing your father when he goes into care.
Even if you haven't felt for a long time that you needed your protector, just the knowledge in the back of your mind that he was there provided a kind of security.
You don't know it is there until you don't have it anymore." Peter S. Silin