So, we built hoop houses. Using welded wire cattle panels and tarps and t-posts and two-by-fours, we put up seven of these to provide shelter for all the critters and to be my milk barn this winter. They may need to last a few winters, but I think they will.
When we do decide where the barn(s) needs to go, and how we are going to build it, and actually get it built, then the hoop houses will revert to being fence panels. I can always use more sheep fencing.
Here's Dapper Dan, our Jacob ram, posing in front of his hoop house. My milk barn and the gorgeous crab apple tree are in the background.