Modifying a Tray for Quail Eggs

So I have decided to get back into coturnix quail. We got a bunch of eggs from a local guy with a great line of jumbo coturnix. Our "universal" egg trays would not accommodate the huge-but-still-smaller-than-a-chicken eggs, so I sat and thought for a while about how to make the trays work somehow while we wait on our new partridge egg trays to come in the mail. I tried running a string across the bottom, which kept the egg from falling through, but there was no way to place a string higher to stop the egg from flopping all around when the tray tilts. So I was kinda stumped. Then it hit me. The answer was sitting right in front of me. Paper egg carton cups! Woot! It worked! 

Clever, huh? :)