That's actually really sweet. It absolutely sounds like something that I would do. Nine times out of ten I cry in animated movies.
And I can empathize with your sister. Before we moved, our basement was FULL of my and my sister's old toys and stuffed animals that we absolutely could not part with. We eventually realized that we couldn't keep it all and got rid of/donated most of it. There are still a couple specific things that we will never get rid of, though. My sister has a stuffed dog that our grandparents gave her when she was like two and I have this stuffed baby gorilla that my mom got me. Those are the two things that we're super attached to. Like if we're going out of town for more than a few days, we pack them in case something bad were to happen to the house, at least they would be safe with us.
It sounds a lot crazier when I type it out than it does when I rationalize it in my head. Perhaps I shouldn't have admitted that.