I did this several years ago. It is quite fun. I really thought about using a dremmel tool to make the hole large enough to blow the eggs easily. I was seeing stars by the time I was done!
http://www.hearthsong.com/egg-blower-tool.htm
https://www.amazon.com/Hole-Easter-Blower-Pysanky-Blowing/dp/B00NMTOL38
http://www.bestpysanky.com/Blas-Fix-Egg-Blower-Blowing-Kit-p/blwr-2.htm
used to blow out eggs. I used the yellow one for years. Dozens of eggs at a time.
Eggactly. I’ve blown out eggs. Not a great idea.