"During the confrontation with Mercer Frey I soul trapped him. Then, I took the Black Soul gem with his soul, a pair of fine shoes and enchanted them with a Fortify Frost Resistance effect. I named the item “Comfy Slippers". Farkas now wears them around the house."
"Like most of the game spouses, Farkas opened up a shop to keep himself occupied. That’s fine, but it recently occurred to me that he’s got the highest pickpocket stat of any follower in the entire game. I’m now a little concerned as to where he’s getting all of his inventory."