That's a bit of a pipe dream. It's better for people to just stay at home as much as possible. Everyone can do that regardless of the availability of masks.
>>eloff+(OP)
People need to stay home, but they also need to go to the grocery store, bank, or other essential activities. When they do, they should be wearing a mask.
>>eloff+hk
You can make your own from a piece of clothe - there are thousands of people doing just that all over Europe, making masks for themselves, their family and friends.