Due to waterlogged ground, we had to house some of ours last winter for about 2 months.
I pinned back the doors on 2 stables and made a pen across the front with 6 hurdles. The hayrack and water were in one stable and we hung hazel and willow branches in the other. The feed troughs hung on the hurdles. It worked really well and the sheep mooched from one stable to the other and around the pen seeing what was on offer. They calmed down quite quickly.
They all tended to sleep in one stable (the one without food) and that needed cleaning more often.
Their feet were in really good nick by the end of the winter - much better than the sheep in the fields - and they had no respiratory problems.
As the weather improved we made another hurdle pen over grass (in the garden) and they went out there for the day and came in at night.
It all seemed very empty

when they went back out in Spring.