@NewAccountForCorona, I missed your question about face masks earlier.
If you're still interested, here is how I made mine:
Cut a piece of old sheet, 16x7 inches.
Fold it to make a double thickness rectangle 8x7.
Seam the short ends, leaving a gap of about 2 inches in the middle.
Double stitch at both sides of this gap to prevent unraveling.
Lay the piece flat with the seam you've just made between 1 and 2 inches from the top.
Seam at each side to close up the piece. *Sew close to the edge of the fabric.
Using the gap, turn the mask right side in.
Turn it seam and gap side up.
Take each side and fold in 1 cm toward the gap to form two long hems.
Sew each hem down.
Leave the hems open at the top.
Attach a small safety pin to an old shoelace or a ribbon or some other cord that is at least 24 inches long, preferably longer.
Thread the lace through the side hem using the safety pin, beginning at the bottom, either side, doesn't matter which.
It will come up at the top 
.
Pull it up and thread it down the other hem.
You will have a loop at the top and two loose ends at the bottom.
Put the loop over your head and pull so the mask fits across the top of your nose, gap and hem side in.
Pull the loose ends so that the mask gathers at the sides.
You may have to manually bunch up the mask at the sides so that it curves around under your chin.
Use the loose ends of the lace to tie around the back of your neck.
You can insert a paper coffee filter into the little gap for an extra layer.
Remove the coffee filter before washing the mask.
Warning - this mask does not look one bit cool made from a plain white sheet. However, DS reasons that with sunglasses on nobody will recognise him.