A draugr trophy? I'm not gonna disrespect my ancestors.
Falmer? That would be insulting that nice Gelebor guy's ancestors.
Dragon skull? Makes me remember Numinex, the dragon that was kept captive until he lost his mind.
What Miraak did wasn't cool either.
Hagraven? Illia is around and that would bring back bad memories.
Animals? That's boring, my house is full of those already.
You know what, I'm sticking to Dwarven machines.