I know we have to wear these masks, but they hurt my ears after a while. And I know there are hundreds of mask extensions out there but i designed my own. It's small at 90mm's long X 20mm's wide X 2 mm's tall at the ends, 1 mm tall at the strap.
it will take a little less than 15" of filament so this is a good print to get rid of your spool leftovers.
I printed this in PLA at25% infill, .2 layer