Saw an interesting thing recently. It's just a simple crochet circle and it holds both ends of an elastic Face Mask. Keeps the elastic from cutting into the back of the ears.
I jotted down some basic info so you could make some if you so desire.
Circle Pattern for Ear Protectors Here
We do carry One inch buttons but I like the One and 1/8" for the circles. You only need ONE button so that is nice too. You can find them in my Etsy Shop.