I have used the practice makes perfect trait, I like this trait, it changes how you build skills a little bit.
I tried scared seeker together with the paranormal pack and it's a nice addition, sims will get an energized moodlet which helps them against the scared moodlets and they will also run faster, so that's fun.
I have not used any of the other unlocked items, traits or aspirations. I'm not sure what I would use them for. I don't have many sims that are occult or like nature anymore and kleptomaniacs are also not allowed. I had sims with those traits back in 2019 or something but as the save got older sims who got along with each other better stayed while sims with more different traits have moved out. We have 100 packs soon for this game, I just want my game to be stable and work.