I have seen swings specially made for chickens. I have one and my girls were not so interested but you have to start them young and I did not. I found if I move the setup in their run once every other month or so they are always like hey?! This is different. My favorite boredom buster “the Rooting box”. I made a 4ftx4ftx2ft frame no bottom and I throw a little straw (no hay it mats) with scratch buried in it. They love it. I don’t do it every day but when I do I toss another flake in bury more scratch. They go to town on it. They use their natural curiosity and forging skills as if they were out foraging freely only in the safety of their hen house. It also reduces bullying. You would be surprised how they break the straw down and they love to lounge in it. Great for your compost when you change it out….looks like you mulched it. If I tell them to get in the rootin box they do that ( I know it’s hard to believe huh?). I also recycled a pond insert (2ft wide about 10inches deep) and keep it full of dirt they dust bathe everyday. I hope this helps.