Dead Thrall is your answer.
I had the Emperor Titus Mede sitting in my living room for about a week. Until he mysteriously disappear...

I guess you didn't finish what you started...
Is it odd that I find stuffing a thalmor as a trophy more disturbing then using one as a dead thrall?
I'm with you. At least the thrall has a certain function and utility to it. Humanoid trophies just seems kind of... just something none of my characters would ever think of, aside from jokes about Ulfric Stormcloak. They may joke about mounting his head on their wall, but they don't even like the fact that nobody's thought to move Ulfric's rotting body out of the Palace of Kings.