I plan on putting chicken a swing in my new coop. Also saw where someone got a small roundish plastic bottle and put a small hole in the side of it. Filled it with scratch and the chickens have to roll it around to get the treat to come out for them.
I use a ladder in the run and they love hanging out on it. You can put a mirror in the run. Chickens love to look at themselves and this will keep them entertained for quite sometime. Hanging veggies and cabbages are always fun for them or even skewered hanging apples. They have fun trying to eat these hanging things.
Great to have you aboard and welcome to our flock!