Now that sims can gain new traits, anyone know what to do to possible obtain klepto trait?

I haven't had the trait pop up out of the blue, but I do have one sim that I've played between two households so far, and I would keep noticing random decor and items going missing on the lot where she was and eventually found those things in her inventory. She even walked off with her previous household's boat. She still has it in her inventory, doesn't even live in Sulani anymore. And that poor family just doesn't have a boat.

I feel like it'll probably eventually pop up with her lol.