Some people don't use microwaves at all. I'm not one of them. They are one of my "servant girls". [Prov. 31:15]
I use a Corningware handled bowl. Fill 2/3 with water. Nuke for 2 minutes. Remove from microwave. Crack egg into hot water. Pierce once with fork ( very important). Nuke at 50% power for 40 seconds. Remove with spoon.
Makes a perfect soft boiled egg.