How can I hang up shields in my house?
Solution 1:
Your house in Whiterun has a shield rack above the bed. You can place two weapons, one on the right and one on the left, and a shield in the middle.
Solution 2:
Yup, Skyrim has Shield Racks too!
I know Vlindril Hall, in Markarth, has two, and they work identically to Weapon racks - taking your equipped item and mounting it on the wall.