Terri, I also have some beer themed fabric, and figured I couldn't use it for making them for co-workers since I work for a k-12 Christian based school. . .
However I did make several to send to my Sister for family/friends to use. Just mailed her another box of masks - 50 this time. I'm planning on stopping at 500 masks made, but we'll see.
I figured that I've used up enough stash that I could treat myself to some new fabric. Bluprint is having a sale and I ordered 16 yards of Ombre fabric - in 1 yard lengths of different colors. That should be really fun to play with!