It's been pointed out to me that one should check with local facilities before setting off on this project, to verify that they in fact want any. My partner is a clothing designer and gets this forwarded to her a couple of times a day, and she did some research and found that local facilities were not requesting or accepting homemade masks and the nearest ones that were were many hours drive away and required for some reason in-person dropoffs, in addition to having "enough for now."