ok someone probably has come up with this but i HATE turning rolling eggs and i HATE watching hatch soccer anyway i bought another bator yes another makes three running right now. its a disease i took top of carton and cut in half long ways, they hold eggs perfect for turning and hatching. no worries of bumping or not being able to crawl up and out if in carton small end down. iwas able to put 42!!! in my bator this way. nice and tidy. just thought i would share. oh and i found my blue cartons had a better holding spots on it. but either should work!