How to Create "Blown Out" eggs for craft projects that use empty, complete eggshells. Blown out eggs can be preserved for years after they're made; without the egg white or yolk, the eggs won't spoil. If you want to learn effective techniques for blowing out eggs, read the linked article.
I think these are gorgeous but I wouldn't want to use blown out eggs which are so fragile. With so much effort put into creating these, I'd want to make something more lasting, even if I only used papier mache.