Ahappychick,
You will need to put a whole both ends to blow the eggs out. Now if depends on how big a whole you would want. You then use one of either those real hard plastic straws if you want it small or a regular straw if you are not concerned with the whole on top. The whole on the bottom has to be large enough for all the liquid to be removed. You can then use water to clean it out later with the straw. I had done many canary and parakeet eggs when I use to breed exhibition birds. I had a lady that would decorate them and make jewelery out of them. Ear rings, and necklaces and other things plus she did reproductions of the expensive Russian eggs. Good luck maybe you found a new hobby. Harry