I am sure you can use any ice cube tray, but I have those silicone ones that I made and froze baby food with. Each one is like an ounce or something. I think I read originally each one should be one egg but that's not quite right for me. Maybe with a different ice tray....And can you explain how you do those frozen eggs? I would like to try it sometime. It sounds like it'd be a really good idea for my family. Plus we have about four dozen in the fridgeI don't eat eggs, The only person who does that lives here are the dogs and my husband. Kids like pancakes with sausage.
Anyway, you just crack and scramble your eggs, and pour them into the ice tray. Freeze them, and pop them out and store in a bag. You can defrost in a cup and use in ANYTHING that you would use a mixed-up egg in... from pancakes, to cakes, to scrambled eggs... literally anything. I was not able to tell a difference at all in using it, but I haven't tried them yet scrambled after defrosting.