i have my main house (grand topal hideaway) listed in the housing tours, it has multiple target dummies, scribing altar, and grandmaster stations (fully filled out with current game), as well as almost every antiquity furnishing on display to preview them
in progress: acquiring mundus stones (currently only have the thief)
An exchange student friend taught me this one - it seems appropriate here.
It's deadrats, and it can take a lot to get the lead - I am so sorry you've been chasing the wrong thing.