Remix of Surgical mask strap used cthlulhu cult token from thing# 681858 I've been printing these in tpu but original author suggested pla for more rapid production. and you can use their settings.
These earsavers are meant to hold the straps on your mask. just put the string around the notches on each side. This keeps the string or elastic off your ears which for some people like me is very uncomfortable, thus saving your ears. until the call of Cthulhu!