Eggs last awhile, but not forever. If you need to preserve yours a little longer, you can stick them in the freezer. Of course, you don't want to just toss them in, shells and all. That's where an ice cube tray can help.
This is the basic recipe for banana ice cream. I used my blender instead of a food processer and added coconut milk, cinnamon and coco powder and topped it with roasted pecans. I almost licked the bowl. I also skipped the almond butter.