chicken coop ideas

Get in there with a fork and dig a bit of the run over for a worm fest .
Rotting logs  that can occasionally be turned over are good for creepy crawlies and pecking and scratching.
Even a small paving slab or two can harbour a few.

I also would occasionally give them a handful of Budgie tonic seed mixture , tiny seeds that keep them  busy .

I use a sandpit with soil and louse powder in it when I cannot let them out

If you move things round from time to time, they like that.