Mastodon certainly has a lot of creative, unique apps. You can definitely find a fit just for you.
But I think the #Threadiverse is having it's own golden era right now with a plethora of choices for us finicky #Fediverse users. The best list I could find for #Lemmy is attached, but it's still missing a few newcomers, like @bean
Nothing near as comprehensive for #kbin yet (the API is still getting it's legs) but there is the amazing @ArtemisApp
