If anyone does place this, I used move objects and debug. I know I'm a bit late to this Simsie Shell Challenge (#JusticeForCowplants). I recently got my partner's computer set up; it's been 2 years since I've played the Sims 4 on PC, This took me ~12 hours. I tried to use only base game, but obiviously I missed something. I checked all objects I could whatever those items are, it's probably apart of the landscape, I had tried my best to remove all of it, but I just don't know what it is.