When Oregon had its first case of Covid19 and there was a scramble for PPE, I knew that family and friends were at risk since they would not be able to get masks.  I found a pattern for the surgical style mask on line.  After studying the properties of the virus, I determined that the cotton fabric was not sufficient to filter the virus.  I added a layer of fusible interfacing.  Fortunately I had yards of a light weight interfacing left from a project.  But no elastic.  I settled on using strips of T-shirt fabric since it "curls" nicely to make a stretchable tie.  I had also used strips of fleece for ties.  Talking to people who used the "over the ear" elastic, I found that the elastic irritated the ears after a while.  People using a mask all day found that the ties were more tolerable.  I made masks for family, friends, postal workers and other essential people.  A request came from a Carmelite Sister friend who works at a retirement care center for masks for the sisters and residents.  I asked for suggestions and she said to make them colorful!  If you have to wear them, then have fun with it!  In all I made over 100 masks.