Most Helpful Guy
One possibility is using a VERY sharp paring knife to cut a flat spot onto the bottom surface before filling them.
Most Helpful Girl
You can get trays at the dollar store
Always soak your hard boiled eggs in cold water and let them sit.
That will help you to remove the shell from them more easier.
What i would do is take all the yellow of the eggs and mix with
Mayonnaise or Miracle Whip add some mustard make sure that
yellow of the egg is solid before you fill each egg up that should
help you out and your eggs shouldn't fall apart.
Trim the bottom a bit to make it flat.
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