My mom's 19 year old kitty is going to pass soon. What memorial items should I get for my mom?

Hey! My mom's senior kitty has had some recent health issues and it's pretty much just let her live out the rest of her days filled with love. I'd like to get my mom something to remember her by. I'd love some suggestions. She already has a blankie with the kitties face on it. Anything cute or thoughtful. Thanks so much.