How do you name your crates?

I always end up struggling to find a name for my crate/app. Sure, there are ways to find an okay name like just using the first English adjective, which isn't already taken.
But this leads to names, which not even remotely describe what you crate is about and makes them hard to google (e.g., imagine searching for 'green').

There must be a better way to find names, right?