From the blog "The Northern Kingdoms (Witcher)"
“Make use of the opportunity to have a bath yourself. I can not only guess the age and breed of your horse, but also its color, by the smell.”
― Andrzej Sapkowski, The Last Wish
This post lists some interesting Witcher-ish mods for Skyrim, like characters, gameplay, items, etc.
It would probably grow into a vast collection, so I limit myself to the mods, that I actually play or have played in my own games. The URLs to the mods can be found at the bottom under "references"