This was a project I did last easter, but I wanted to repost it because I'm still in love with it and haven't and a chance to do anything for Easter this weekend! It's easier than you would think, and super fun!
To blow out the egg, I poked a hole in each end with a needle, and then made the bottom hole bigger with some drill bits. Then it all came down to blowing in one end and having all the egg guts pop out the other. Lovely. Then I microwaved the empty shells to "cook" the remaining egg inside, which also makes the shells a bit stronger. After drawing the patterns on the outside, I wrote out a little message, rolled it up and inserted it into the bigger hole in the bottom. To make it even more fun when the egg was cracked, I added some glitter into the mix. To seal up the bottom, I used a bit of tissue and liquid bandaid.