I haven’t seen any in person, but then I only get out once a week early in the morning.
I know I’ve seen ads for them. And a lot of flag masks.
Googling MAGA masks brings up a lot.
Here’s one I like (f-bomb alert):
https://i.etsystatic.com/16348023/r/il/bbd60f/2281684770/il_570xN.2281684770_nrt8.jpg