I found an idea on the web for growing grass inside the chicken run without letting the chickens eat it all or scratch it up. I thought it was so cool I added it to my Pinterest wall. I think I could devote a corner of the run to this and really green up the run and give my chicks some healthy greens to munch on.

http://pinterest.com/pin/422986589972249428/
http://pinterest.com/pin/422986589972249428/