A few years ago I left Polly Peachum with my parents for several weeks while I made a big move across state lines. After I was settled I went to get her, and my mother packed a felt blanket in her box. She said it was so the cat remembered her.
When I was a kid we had a puppy. The vet told us that if the puppy cried at night we could rub a towel on our faces and put it in with her so that she would be comforted by our smell. So we did. But the puppy had only known us for 24 hours! She didn’t care what we smelled like.
The puppy cried all night. And Polly never touched that blanket.