There's another thread along this line that suggested tying up greens for them to jump and peck. Also small pet toys suspended for them to play chicken "tetherball". Someone even suggested hanging bells for them to ring! LOL! I want to try the bells. Just imagine.....a musical chicken coop! I like the idea of watching them play with toys. There's a man from the UK on YouTube whose chickens will chase a frisbee as far as he can toss it. It's hilarious. I have a child's rubber softball in my pen. When I toss it, Brandy runs to check it out....sometimes! LOL! The highlight of your chickens' day is when you appear with TREATS! Since treats aren't really good for them every day, I trick mine into thinking they're getting treats by hand feeding layer pellets (which they won't eat from the feeders for some strange chicken reason). I think they're too large for them, so I break them into smaller bites and hand feed them. They are all so jealous of each other getting treats, that even the ones who don't like particular foods will eat them if they see another bird eating it.