Packs you don't use at all?

I definitely use at least the BB and CAS from every pack that I've bought. That being said, I've probably used Batuu the least, and I've never played all the way through the gameplay, though I might someday. I only played through the Strangerville story once, but I think the world is gorgeous, and I definitely use that, as well as a lot of the clothes and architecture. I've never used any of the DHD gameplay, and probably never will, as it doesn't interest me at all, but I do like some of the BB objects that came with it.

Aside from those three, I have used the features from all of the other packs pretty extensively. I play rotationally, so some households will lean more heavily toward some packs than others, but there are lots of little quality of life issues that carry through.