I had both of my parents in home at one time or another, one short term and one long term. The biggest treat for my dad was food. Get their favorites with in their allowed diets. The were always loosing chap sticks and both liked cough drops. My mom liked find the word books and my dad always wanted a flash light near by. Change for the drink or snack machine is always welcome. The best thing will be getting them home for that 4 hours if it is safe and will not make it too hard on them to go back.