I do have some of those on hand but don't have pictures to post just yet. I was lucky enough to find a lady with a small supply in her attic. When they are gone, they are gone. Perfect with goose or duck eggs. To glue or not to glue.
Some people glue the egg to the stand and the stand to the base.
This idea has its merits from a safety point of view. Say at sometime you wish to change the stand. Once your egg is permanently attached to the stand, it is there forever. If you are sure, then by all means epoxy or silicone your egg carefully in place. However, there is also the option of using a temporary fixative like museum wax or one of the commonly available plastic substitutes.