I remember a movie from the when I was a kid, and all I remember is there being a little girl and she's with a sloth, and there's a flying ship? I've been looking for this for years, and I can't remember, Anyone?

Doesn't sound familiar. But what I usually do is ask the anime shops who sell the films and describe them.

Maybe Nausicaa of the Valley of the Wind ?

The title character has a pet that looks like a sloth or lemur, and there are flying ships in it.