I've been putting golf balls in the nesting boxes, but the girls get mad and push them out. Then the rabbit plays with them in the coop and I spend an hour or so finding them. I picked up some wooden eggs (2 different sizes, just like my girl's eggs). Put one of each in the box and one of each in the bin on top of the box. After 20 minutes I had two eggs actually in the box!!!!!! Since it happened so quick I was also able to figure out which two girls were laying. Turns it it was my BA and Sex-link. Not my olive egger (Yay hoping for actual olive eggs) and my Cochin. So I'm starting to think that maybe the golf balls were just too cold and they didn't like them.