Another practical prop.
Star Trek Picard, 7 of 9's Borg implants.
This was during one of our Covid lockdowns, me being bored to the bones.
I had some paching materials (transparent plastic stuff) and some epoxy putty (Milliput), as well as some other plastic scraps. I also had still some paint, so no need to leave the place.
First I made a paper stencil fitting my own face, then I cut and shaped the packaging stuff as a base. Then I satrted to build up on that with putty, sculpting, painting etc. As you can see in the first pics, the thing fits me. But mine is rigid, whereas the original is cast from silicone and way easier to attach.