Hi, there are a number of ways to make them.
1. There is a way that uses a blender, a dehydrator, and a coffee grinder.
2. They can be made using a skilet, along with a blender or egg beater.
3. Another method uses the blender and slow bakes them on a cookie sheet in your oven.
Never add anything to the eggs including oil, milk, cheese, chives, salt, etc.
These recipes are all on line and some are demonstrated on YouTube.
Powered eggs last a very long time.
I've even seen kids in scouting programs make these for use later on when they participate in some primative camping.