The pattern is available in Norwegian and English, and can be downloaded from this site. It contains written text and tutorial photos.
The egg warmer is worked bottom up and in round. The tail and the head will close the opening at top.
From a childhood, filled with happy colours, two egg warmers showed up. A little worn at the edges after many years of use, but still ready to serve their purpose.
When two became three, a new pattern was born.