An Egg Clacker is a gizmo that cuts the top off an egg perfectly. See video: http://youtu.be/bQTSYnKei0A
They are hard to find in the US. My mom found me on on a recent trip to Austria.
They are wicked fun! You don't have to use them for boiled eggs, either. Try them w/ raw eggs, then fill the empty shells w/ what ever you like!
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