I don't have any indoor chicken decor, but I do try to decorate my coop in a chicken theme!
The first thing you see when you open the door to the coop is the pop door and right above that is this super cute rooster decoration that just sits on the ledge above the pop door. I got this for $3 from Gordman's.
On the wall where the nest boxes sit, I have this super cute decor that says, "The Rooster Crows but The Hen Delivers!" I think it's adorable and so true! $3 at Gordman's!
I found this awesome jar at Gordman's for $5. It has a lid too and I use it to store grit in the coop for easy access.
^This was $7 at Gordman's and I think it's looks awesome hung on the door of the coop.
^Another view of the wall above the nest boxes. I got that huge thermometer at the dollar store and it's so helpful.
This isn't really decor, but a good idea to fix boredom. I got the black thing from the center of one of those baby cakes you get for baby chicks. I tied it to string and hung that inside the coop (see above). On a really hot, cold or rainy day, I put fruit and veggies on it and treat it as a kabob. The chooks love it.