In case you haven't already seen this

[nonelvis]

Instructions for how to turn an old t-shirt into a no-sew face mask. In Czech, but you can follow along without it.

I did this today using the bottom of a shirt -- made the mistake of choosing a V-neck, which didn't leave me enough face height along the arm area of the shirt -- but it still worked just fine for me. Totally recommended if you want to minimize the harm your potentially asymptomatic self could do to an otherwise healthy person.

Taking it out for a spin tomorrow. I predict no one will look twice at me at the Chinese grocery store I frequent, while people at the Stop & Shop will side-eye and keep their distance.