I designed this as a Halloween prop for a coordinated family Halloween costume last year. Spock, Nurse Chapel, and a Gorn !!
With the release of season 2 of STSNW coming out soon I wanted to share this with you all.
You will need a round magnet. The ones I used were a diameter of 12.67 mm and a thickness of 1.72 mm. So don't buy larger or thicker than this and you should be ok. I just used another magnet under my shirt to attach it.
The author marked this model as their own original creation.