They make empathy postcards
When I was hospitalized in 2003 we had a craft class. One day we were making cards. I made one for myself, feel better soon. No one brings cards when you are in the behavioral health unit.
I thought there was no such thing. But, I joined a gift exchange and one thing I received were Empathy Postcards with sayings like, Together we can find a cure for the phrase " what doesn't kill you makes you in stronger." and I'm really sorry I haven't been in touch, I didn't know what to say.
Fortunately, my friends and I have been doing well but I am glad I have them for when I need them.