Mask extender

I tried to print various mask extenders, but this one is simply elegant.

Print with clear material, 0.2 -0.3mm.

To improve against breaking, try printing with 1 wall and 100% infill rather than only (3) walls.
To further improve stability, melt object(s) (if on glass printplate) directly after print finishes with a torch to re-flow slightly.

Then let cool down.

Then give to people :-)