Hello! I'm working at my university's student-run farm where we primarily house production sheep and goats. We have dorset lambs who are by themselves for a variety of reasons (one is a triplet, one was being picked on by its sibling, etc). They won't be by themselves for very long but we are trying to entice them to bounce around and use their legs instead of sitting around all day. Some are definitely bored. I did some googling about sheep enrichment items but found very little diversity so hoping I can get some creative ideas from you guys! Thank you!
This review relates to calves, but it might give you some ideas. Good luck! https://www.sciencedirect.com/science/article/pii/S0022030216000345