Make them into grass head eggs, of course! We had a few eggs that cracked when I was blowing out the egg contents. I cracked the tops off and we colored them anyway. We added some soil and some grass seed. We had some "face" stickers that came with a egg decorating kit, that Alex used to created some faces on the eggs. We watered them and put them by the window. In a couple of days the grass began to sprout.