As I think we'll be wearing masks for the foreseeable future here's a source of amusing, nationalist, favourite bands and even some railway ones. I order 4 at a time so as to get discount. Beware, there are over 43,000 to choose from (and that's just the flat ones) so you could be there some while!
No connection other than being a satisfied customer.
https://www.redbubble.com/shop/masks (https://www.redbubble.com/shop/masks)
PM sent mick.
I have a selection of 3-layer masks. Happily SWMBO is a dab hand at sewing and over the years has amassed many many scraps and pieces of material in all sorts of patterns, and has made a fair few for us both, so perhaps she should set up a rival business. :hmmm:
Prices looked high on that link I thought, but she pointed out that with the material, wire/plastic former, elastic, and work required they're perhaps about right. Maybe.