Here in the US, the powers that be haven’t quite decided if we should all wear masks or not. I have little to do so here are a pair I made for my husband and myself.
I got the pattern here. I have the fabric and a fair amount of elastic but ties could be used too. They are just two layers of fabric, but I guess they could help.
Here’s a couple of photos of the one I made myself (and yes that’s a cat face with a mousie hanging from the mouth) and a Spider-man one for my husband.