Mask Clip
thingiverse
Another utility to make it easier to live with those masks https://www.youtube.com/watch?v=XQDpVnNjnJM
Download Model from thingiverse
With this file you will be able to print Mask Clip with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Mask Clip.