I gave my Markath home a dwemer theme (displaying dwemer armor and artefacts), while dawnstar sanctuary is of course my DB hub hosting all evil stuff. I'm especially proud of my Windhelm house as its some sort of Nord hero museum (Ysgramor items, nord hero weapons etc.).

So, how do you style your houses?

I like to keep the heads of my followers on my shelf in Solitude.

Hjerim houses all my Daedric artifacts and is where I do my enchanting. Breezehome houses all my alchemy supplies and dragon bones/gems/ingots. Proudspire Manor is where my spouse lives. Vlindrel Hall I haven't found a use for yet, although it's my favorite house aesthetically. And I kind of hate Honeyside so I never really go there.